This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A383769 #8 May 09 2025 10:34:17 %S A383769 1,1,2,1,2,1,2,1,8,1,2,1,2,1,4,1,2,2,2,1,4,1,2,1,8,1,16,1,2,1,2,1,4,1, %T A383769 4,1,2,1,4,1,2,1,2,1,16,1,2,1,8,2,4,1,2,4,4,1,4,1,2,1,2,1,16,1,4,1,2, %U A383769 1,4,1,2,1,2,1,16,1,4,1,2,1,128,1,2,1,4,1,4 %N A383769 Denominators of the sequence whose Dirichlet convolution with itself yields cubes (A000578). %H A383769 Vaclav Kotesovec, <a href="/A383769/b383769.txt">Table of n, a(n) for n = 1..10000</a> %o A383769 (PARI) for(n=1, 100, print1(denominator(direuler(p=2, n, 1/(1-p^3*X)^(1/2))[n]), ", ")) %Y A383769 Cf. A000578, A299149, A299150, A318649, A318512, A383768 (numerators). %K A383769 nonn,frac %O A383769 1,3 %A A383769 _Vaclav Kotesovec_, May 09 2025