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A052272 Number of n X n matrices over GF(5) under row and column permutations. 10

%I

%S 1,5,175,57675,270656150,20834113243925,28125393244553141210,

%T 699686291478538604891895515,333504381764054807093590006199733915,

%U 3140944762272022074073055438393255181867210010,599071101908675118606355537962231556550216893297767505350

%N Number of n X n matrices over GF(5) under row and column permutations.

%H Alois P. Heinz, <a href="/A052272/b052272.txt">Table of n, a(n) for n = 0..26</a>

%F a(n) = sum_{1*s_1+2*s_2+...=n, 1*t_1+2*t_2+...=n} (fix A[s_1, s_2, ...;t_1, t_2, ...]/(1^s_1*s_1!*2^s_2*s_2!*...*1^t_1*t_1!*2^t_2*t_2!*...)) where fix A[...] = 5^sum_{i, j>=1} (gcd(i, j)*s_i*t_j). - _Christian G. Bower_, Dec 18 2003

%Y Cf. A002724, A052269, A052271, A091062.

%Y Column k=5 of A246106.

%K nonn

%O 0,2

%A _Vladeta Jovovic_, Feb 05 2000

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Last modified May 20 13:24 EDT 2019. Contains 323422 sequences. (Running on oeis4.)