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 A087186 #19 Apr 25 2025 04:27:52
%S A087186 2,4,31,304,40044,500522,86094668,1167752848,225001039696,
%T A087186 652498288154820,9451735761626880,29731605314969017772,
%U A087186 6529673496702876605072,97300805803445759460364,21809340225815485957990464,74647602337610140872493303186,260456466719887195671579173952976
%N A087186 Q(p)/p where p runs through the primes and Q(k) is the k-th central quadrinomial coefficient (A005190).
%H A087186 Amiram Eldar, <a href="/A087186/b087186.txt">Table of n, a(n) for n = 1..263</a> (terms 1..100 from M. F. Hasler)
%t A087186 f[n_] := Max[CoefficientList[Expand[Sum[x^k, {k, 0, 3}]^n], x]]; Table[f[p]/p, {p, Prime[Range[15]]}] (* _Amiram Eldar_, Apr 25 2025 *)
%Y A087186 Cf. A005190.
%K A087186 nonn
%O A087186 1,1
%A A087186 _Benoit Cloitre_, Oct 19 2003