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 A082559 #15 Jan 13 2025 06:36:40 %S A082559 1,64,2144,49920,905840,13627264,176638592,2025205248,20930373880, %T A082559 197788352320,1728062919232,14083242424576,107837287452608, %U A082559 780481475916160,5366307146732800,35202669371599360,221142159585764508,1334633003840266624,7760187771579170400 %N A082559 G.f.: Product_{m>=1} 1/(1-x^m)^64. %H A082559 Alois P. Heinz, <a href="/A082559/b082559.txt">Table of n, a(n) for n = 0..1000</a> %H A082559 <a href="/index/Pro#1mxtok">Index entries for expansions of Product_{k >= 1} (1-x^k)^m</a> %p A082559 a:= proc(n) option remember; `if`(n=0, 1, add( %p A082559 numtheory[sigma](j)*a(n-j), j=1..n)*64/n) %p A082559 end: %p A082559 seq(a(n), n=0..25); # _Alois P. Heinz_, Mar 12 2015 %t A082559 a[n_] := a[n] = If[n == 0, 1, Sum[DivisorSigma[1, j]*a[n-j], {j, 1, n}]*64/n]; Table[a[n], {n, 0, 25}] (* _Jean-François Alcover_, Jan 13 2025, after _Alois P. Heinz_ *) %Y A082559 Cf. 64th column of A144064. %K A082559 nonn %O A082559 0,2 %A A082559 _N. J. A. Sloane_, May 04 2003