This is not a typo.pic.twitter.com/301t8UYeMy
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Here's a neat visualization.
Note that each color stacks up to make a square of dimension 1x1x1, 2x2x2, 3x3x3, ..etc.pic.twitter.com/zqS0A6fxH3
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The image is not mine, and I can't seem to find the source. If any of you can find it let me know!
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@fergleiser asked: "Is there an integral version of this?" So here's what I came up with. In short, there is!pic.twitter.com/EZdxTxWHDo
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Moreover, it's quite straightforward to do the more general case. Try it out!pic.twitter.com/EWEPAJlG9p
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Note that the general case holds for all n≠-1.
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@InertialObservr, I found the same image on Wikipedia: https://en.wikipedia.org/wiki/Squared_triangular_number#CITEREFGulley2010 … -
right, but somebody must have made it that we can cite.
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We did not find the source for that image but found this beautiful 3-D animation:https://www.youtube.com/watch?v=glearwgR1Ls …
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From Gulley (2010) in Wikipedia. https://en.m.wikipedia.org/wiki/Squared_triangular_number …
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I find http://tineye.com good for finding provenance of images.
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they are called squared triangular numbers, this is the image from wikipedia about it
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