A172920 - OEIS

%I #6 May 20 2021 15:46:20

%S 0,5,1356,3978958,70252384001,5897868149018025,1951415739647747836330,

%T 2186630273077730637194339120,7330158006601231605920532966798192,

%U 66348852357002987700605359091266362631153

%N Number of n X n 0..7 arrays with row sums 10 and column sums 10.

%H R. H. Hardin, <a href="/A172920/b172920.txt">Table of n, a(n) for n=1..15</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010