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 A373540 #14 Jun 10 2024 10:02:03
%S A373540 1,1,1,1,1,-29,-179,-629,-1679,52921,672841,4352041,19934641,
%T A373540 -656794709,-13394641259,-130483743389,-870226287839,29354743432561,
%U A373540 855880592510161,11361346027482961,101129588155349281,-3446498927212733069,-134465010284782027619
%N A373540 Expansion of e.g.f. exp(x/(1 + x^4)^(1/4)).
%F A373540 a(n) = n! * Sum_{k=0..floor(n/4)} (-1)^k * binomial(n/4-1,k)/(n-4*k)!.
%F A373540 a(n) == 1 mod 30.
%o A373540 (PARI) a(n) = n!*sum(k=0, n\4, (-1)^k*binomial(n/4-1, k)/(n-4*k)!);
%Y A373540 Cf. A012019, A373539.
%Y A373540 Cf. A373519.
%K A373540 sign
%O A373540 0,6
%A A373540 _Seiichi Manyama_, Jun 09 2024