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 A081369 #12 Mar 24 2024 09:55:16
%S A081369 0,2,3,12,5,12,7,56,9,40,11,108,13,84,90,240,17,144,19,80,315,220,23,
%T A081369 72,25,312,27,560,29,0,31,992,759,544,770,720,37,684,1053,520,41,252,
%U A081369 43,1408,1125,1012,47,1872,49,1200,918,624,53,1404,2475,2744,2223,1624,59
%N A081369 Binomial(n^2, n) reduced mod n^2.
%H A081369 Seiichi Manyama, <a href="/A081369/b081369.txt">Table of n, a(n) for n = 1..10000</a>
%F A081369 a(n)=Mod[C(n^2, n), n^2]
%p A081369 A081369:=n->binomial(n^2, n) mod n^2; seq(A081369(n), n=1..100); # _Wesley Ivan Hurt_, Jan 28 2014
%t A081369 Table[Mod[Binomial[n^2, n], n^2], {n, 100}] (* _Wesley Ivan Hurt_, Jan 28 2014 *)
%Y A081369 Cf. A014062, A081370.
%K A081369 easy,nonn
%O A081369 1,2
%A A081369 _Labos Elemer_, Mar 20 2003