3 ms·
These are certainly cool. Yet everytime I've stumbled over them, I find that "Integer Sequences"[1] 'already did it'. And that's true for this case too[2]. [1]
by theophrastus 9y ago
These are certainly cool. Yet everytime I've stumbled over them, I find that "Integer Sequences"[1] 'already did it'. And that's true for this case too[2].
[1] https://oeis.org/ https://oeis.org/
[2] https://oeis.org/A000216 https://oeis.org/A000216
- jwilk 9y agoOEIS links to PDF with Arthur Porges's proof: https://oeis.org/A003621/a003621.pdf https://oeis.org/A003621/a003621.pdf