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 A283338 #13 Mar 08 2017 06:57:39
%S A283338 1,-1,-128,-2059,-6069,210067,3664420,23366098,-116899962,-4133365357,
%T A283338 -41809923367,-125160180169,2447495850838,42931762306584,
%U A283338 321967686614676,281683012498569,-23874414003295851,-318729240693402530,-1992572289343189863
%N A283338 Expansion of exp( Sum_{n>=1} -sigma_8(n)*x^n/n ) in powers of x.
%H A283338 Seiichi Manyama, <a href="/A283338/b283338.txt">Table of n, a(n) for n = 0..1000</a>
%F A283338 G.f.: Product_{n>=1} (1 - x^n)^(n^7).
%F A283338 a(n) = -(1/n)*Sum_{k=1..n} sigma_8(k)*a(n-k).
%Y A283338 Column k=7 of A283272.
%Y A283338 Cf. A023876 (exp( Sum_{n>=1} sigma_8(n)*x^n/n )).
%Y A283338 Cf. exp( Sum_{n>=1} -sigma_k(n)*x^n/n ): A010815 (k=1), A073592 (k=2), A283263 (k=3), A283264 (k=4), A283271 (k=5), A283336 (k=6), A283337 (k=7), this sequence (k=8), A283339 (k=9), A283340 (k=10).
%K A283338 sign
%O A283338 0,3
%A A283338 _Seiichi Manyama_, Mar 05 2017