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 A373525 #18 Jun 10 2024 10:03:26
%S A373525 1,1,1,1,1,61,361,1261,3361,-37799,15121,2522521,20005921,486563221,
%T A373525 363363001,-12486293819,3113772481,-12960051533519,8909829442081,
%U A373525 528011239172401,241435513794241,1381310884267333741,3097715443570441,-49080307628073705059
%N A373525 Expansion of e.g.f. exp(x * (1 + x^4)^(1/2)).
%F A373525 a(n) = n! * Sum_{k=0..floor(n/4)} binomial(n/2-2*k,k)/(n-4*k)!.
%F A373525 a(n) == 1 mod 60.
%o A373525 (PARI) a(n) = n!*sum(k=0, n\4, binomial(n/2-2*k, k)/(n-4*k)!);
%Y A373525 Cf. A190877, A373524, A373526.
%Y A373525 Cf. A373520.
%K A373525 sign
%O A373525 0,6
%A A373525 _Seiichi Manyama_, Jun 08 2024