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 A283168 #14 Mar 04 2017 13:48:48
%S A283168 1,-15,97,-350,770,-1133,1540,-2731,4230,-3960,3402,-6580,9167,-5390,
%T A283168 4310,-11061,12320,-5306,2030,-7530,14784,-4340,-10119,-9240,20090,
%U A283168 11438,-17275,-4928,2270,14080,-26840,7700,16646,24640,-53760,7449,10780,46200,-61600
%N A283168 Expansion of exp( Sum_{n>=1} -sigma(8*n)*x^n/n ) in powers of x.
%H A283168 Seiichi Manyama, <a href="/A283168/b283168.txt">Table of n, a(n) for n = 0..1000</a>
%F A283168 G.f.: Product_{n>=1} (1 - x^n)^15/(1 - x^(2*n))^7.
%F A283168 a(n) = -(1/n)*Sum_{k=1..n} sigma(8*k)*a(n-k). - _Seiichi Manyama_, Mar 04 2017
%Y A283168 Cf. A283120 (exp( Sum_{n>=1} sigma(8*n)*x^n/n )), A283122 (sigma(8*n)).
%Y A283168 Cf. exp( Sum_{n>=1} -sigma(k*n)*x^n/n ): A115110 (k=2), A185654 (k=3), A283163 (k=4), A282937 (k=5), A283164 (k=6), A282942 (k=7), this sequence (k=8), A283169 (k=9).
%K A283168 sign
%O A283168 0,2
%A A283168 _Seiichi Manyama_, Mar 02 2017