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 A058004 #8 Aug 13 2014 19:07:42 %S A058004 1,251610,302752867740,9178323524804624,28125393244553141210, %T A058004 19909522361922032493690,5116530046996205504668323, %U A058004 626072069382507442113224128,43460016875695276108491159279 %N A058004 Number of 6 X 6 matrices with entries mod n, up to row and column permutation. %C A058004 Number of k X l matrices with entries mod n, up to row and column permutation is Z(S_k X S_l; n,n,...) where Z(S_k X S_l; x_1,x_2,...) is cycle index of Cartesian product of symmetric groups S_k and S_l of degree k and l, respectively. %H A058004 Alois P. Heinz, <a href="/A058004/b058004.txt">Table of n, a(n) for n = 1..1000</a> %F A058004 a(n)=(1/6!^2)*(n^36 + 30*n^30 + 225*n^26 + 170*n^24 + 1350*n^22 + 3225*n^20 + 4075*n^18 + 9900*n^16 + 28500*n^14 + 56048*n^12 + 61020*n^10 + 77616*n^8 + 153840*n^6 + 87840*n^4 + 34560*n^2). %Y A058004 Cf. A039623, A058001-A058003, A002724, A052271, A052272. %Y A058004 Row n=6 of A246106. %K A058004 easy,nonn %O A058004 1,2 %A A058004 _Vladeta Jovovic_, Nov 04 2000