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 A294955 #16 Nov 14 2017 09:57:57
%S A294955 1,65,6562,1049601,244140626,78368963450,33232930569602,
%T A294955 18014467229220865,12157665462543713203,10000002384185795209930,
%U A294955 9849732675807611094711842,11447546167874515876354097130,15502932802662396215269535105522
%N A294955 a(n) = Sum_{d|n} d^(2*n+2).
%H A294955 Seiichi Manyama, <a href="/A294955/b294955.txt">Table of n, a(n) for n = 1..213</a>
%F A294955 G.f.: Sum_{k>0} k^(2*k+2)*x^k/(1-(k^2*x)^k).
%o A294955 (PARI) {a(n) = sigma(n, 2*n+2)}
%o A294955 (PARI) N=20; x='x+O('x^N); Vec(sum(k=1, N, k^(2*k+2)*x^k/(1-(k^2*x)^k)))
%Y A294955 Cf. A294645, A294810, A294953, A294954.
%K A294955 nonn
%O A294955 1,2
%A A294955 _Seiichi Manyama_, Nov 12 2017