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 A097905 #13 Aug 26 2015 21:27:14
%S A097905 1,2,1,6,3,2,24,3,8,3,120,15,40,15,24,720,45,80,45,144,5,5040,315,560,
%T A097905 315,1008,35,720,40320,315,4480,315,8064,35,5760,315,362880,2835,4480,
%U A097905 2835,72576,35,51840,2835,4480,3628800,14175,44800,14175,145152,175
%N A097905 Triangle where a(m,n) = largest divisor of m! coprime to n.
%C A097905 Right edge of triangle is sequence A095996.
%e A097905 a(6,3) = 80 because 80 is largest divisor of 720 which is coprime to 3.
%p A097905 seq(seq(denom(m^n/n!),m=1..n),n=1..11); # _Vladeta Jovovic_, May 03 2005
%t A097905 Flatten[Table[Table[Select[Divisors[m! ], GCD[ #,n]==1&][[ -1]], {n,1,m}],{m,1, 10}]] (* _Stefan Steinerberger_, Nov 09 2007 *)
%Y A097905 Cf. A095996.
%K A097905 nonn,tabl
%O A097905 1,2
%A A097905 _Leroy Quet_, Sep 04 2004, Apr 10 2007
%E A097905 More terms from _Stefan Steinerberger_, Nov 09 2007