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 A375992 #9 Sep 05 2024 08:07:55 %S A375992 1,-4,0,16,112,976,11760,184656,3566192,81556176,2152839920, %T A375992 64389871696,2151410517872,79406805184976,3208188040810480, %U A375992 140812644820877136,6671575179144279152,339348322285418119376,18443287953728909235440,1066619199816333440144976 %N A375992 Expansion of e.g.f. (4 - 3 * exp(x))^(4/3). %F A375992 a(n) = Sum_{k=0..n} (Product_{j=0..k-1} (3*j-4)) * Stirling2(n,k). %o A375992 (PARI) a(n) = sum(k=0, n, prod(j=0, k-1, 3*j-4)*stirling(n, k, 2)); %Y A375992 Cf. A032033, A346982, A365558, A375949, A375952, A375993. %Y A375992 Cf. A375988. %K A375992 sign,easy %O A375992 0,2 %A A375992 _Seiichi Manyama_, Sep 05 2024