Coding Challenge #110: Recamán's Sequence - Part 1

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Published on July 24, 2018 6:41:37 PM ● Video Link: https://www.youtube.com/watch?v=DhFZfzOvNTU

Duration: 23:59

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In this coding challenge, I visualize the Recamán’s number sequence using the p5.js library and go on to generate a series of musical tones using p5.js sound. Code: https://thecodingtrain.com/challenges/110-recamans-sequence

p5.js Web Editor Sketches:
🕹️ Recamán's Sequence - Part 1: https://editor.p5js.org/codingtrain/sketches/2OSiAFU7k
🕹️ Recamán's Sequence - Part 2: https://editor.p5js.org/codingtrain/sketches/2CRSf-wRL

Other Parts of this Challenge:
📺 Recamán's Sequence - Part 2: https://youtu.be/pYnaBQgnARQ

🎥 Previous video: https://youtu.be/Ae73YY_GAU8?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
🎥 Next video: https://youtu.be/3noMeuufLZY?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
🎥 All videos: https://www.youtube.com/playlist?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH

References:
📘 Recamán's Sequence on MathWorld: http://mathworld.wolfram.com/RecamansSequence.html
🔖 Recamán's Sequence on Wikipedia: https://en.wikipedia.org/wiki/Recam%C3%A1n%27s_sequence
🗐 OEIS: http://oeis.org/
🗏 Bernardo Recamán Santos: https://es.wikipedia.org/wiki/Bernardo_Recam%C3%A1n_Santos

Videos:
👻 The Slightly Spooky Recamán's Sequence: https://youtu.be/FGC5TdIiT9U
🎹 Recamán's Sequence by Dale Gerdemann: https://youtu.be/h3qEigSSuF0
🚂 Tutorial Playlist on p5.js Sound: https://youtube.com/playlist?list=PLRqwX-V7Uu6aFcVjlDAkkGIixw70s7jpW
🔴 Coding Train Live 146: https://youtu.be/XXwjcxMOA8s?t=2137s

Related Coding Challenges:
🚂 #140 Leibniz Formula for Pi: https://youtu.be/uH4trBNn540
🚂 #133 Times Tables Cardioid Visualization: https://youtu.be/bl3nc_a1nvs
🚂 #C2 Collatz Conjecture: https://youtu.be/EYLWxwo1Ed8

Timestamps:
0:00 Introduction!
1:56 Discussing the Recamán's Sequence
6:08 Starting to code and adding the prerequisites to generate the sequence
7:18 Writing the algorithm to generate the numbers of the sequence
8:36 Testing the algorithm
9:40 Adding the counter
10:44 Visualizing the algorithm!
13:48 Making continuous series of arcs instead of ellipses
16:20 An exercise to pause and try for yourself!
16:50 Creating an Arc class and an array of arcs
19:33 Scaling down the animation as we move along the Recamán's Sequence
21:34 Scaling down by the biggest number in the sequence generated so far
22:34 Explore the Recamán's Sequence and share your works!

Editing by Mathieu Blanchette
Animations by Jason Heglund
Music from Epidemic Sound

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🎥 Coding Challenges: https://www.youtube.com/playlist?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
🎥 Intro to Programming: https://www.youtube.com/playlist?list=PLRqwX-V7Uu6Zy51Q-x9tMWIv9cueOFTFA

🔗 p5.js: https://p5js.org
🔗 p5.js Web Editor: https://editor.p5js.org/
🔗 Processing: https://processing.org

📄 Code of Conduct: https://github.com/CodingTrain/Code-of-Conduct

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#numbersequence #recamanssequence #music #audiovisual #visualization #p5js #javascript