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 A332693 #13 Feb 05 2021 08:55:47
%S A332693 1,-2,14,-156,2328,-42630,902736,-20961864,497925504,-10347816906,
%T A332693 54902188800,15803663268492,-1741565563831296,146556727320337074,
%U A332693 -11551833579195721728,901051402625901468000,-71007771313742983888896,5701873713553516375488366,-467924697090124685492944896
%N A332693 a(n) = n! * Laguerre(n, 3*n).
%H A332693 Vaclav Kotesovec, <a href="/A332693/b332693.txt">Table of n, a(n) for n = 0..350</a>
%t A332693 Table[n! * LaguerreL[n, 3*n], {n, 0, 25}]
%t A332693 Flatten[{1, Table[n!*Sum[Binomial[n, k] * (-1)^k * 3^k * n^k / k!, {k, 0, n}], {n, 1, 25}]}]
%t A332693 Table[n! * Hypergeometric1F1[-n, 1, 3*n], {n, 0, 25}]
%o A332693 (PARI) a(n) = n!*pollaguerre(n, 0, 3*n); \\ _Michel Marcus_, Feb 05 2021
%Y A332693 Cf. A277423, A332692, A332679, A332694, A332695.
%Y A332693 Cf. A277392, A295407.
%K A332693 sign
%O A332693 0,2
%A A332693 _Vaclav Kotesovec_, Feb 20 2020