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 A296617 #29 Dec 20 2017 10:02:46
%S A296617 1,-4,-11,-104,-1388,-22980,-446524,-9882944,-244592124,-6684031040,
%T A296617 -199824449532,-6488250797312,-227456440349948,-8565880619584896,
%U A296617 -345018776767586572,-14805421633750610240,-674514253891722861612,-32522567276377571337728
%N A296617 Expansion of 1/Sum_{k>=0} (k+1)^(k+1)*x^k.
%H A296617 Seiichi Manyama, <a href="/A296617/b296617.txt">Table of n, a(n) for n = 0..385</a>
%o A296617 (PARI) N=66; x='x+O('x^N); Vec(1/sum(k=0, N, (k+1)^(k+1)*x^k))
%Y A296617 Cf. A000312, A077607, A294372, A296715.
%K A296617 sign
%O A296617 0,2
%A A296617 _Seiichi Manyama_, Dec 19 2017