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 A145437 #4 Sep 08 2022 08:45:38 %S A145437 1,63855,776600,3825360,4809024,25530120,570240,29937600,26611200, %T A145437 25945920,43545600,21621600,0,8553600,6652800,0,0,0,0,11975040, %U A145437 11404800,0,0,0,0,0,0,0,0,3991680,0,0,0,0,13685760 %N A145437 a(n) = number of elements of order n in simple group Alt(12) of order 239500800. %o A145437 (Magma) t1:=[0 : n in [1..240]]; %o A145437 G:=Alt(12); %o A145437 t2:=Classes(G); %o A145437 for c in t2 do %o A145437 t1[c[1]] := t1[c[1]] + c[2]; %o A145437 end for; %o A145437 t1; %Y A145437 A row of A057740. Cf. A031963. %K A145437 nonn,fini,full %O A145437 1,2 %A A145437 _N. J. A. Sloane_, Apr 06 2009