A172958 - OEIS

%I #10 Apr 27 2015 11:28:45

%S 1,1,10,1540,2309384,20856798285,842286559093240,

%T 123538613356253145400,56272722406349235035916800,

%U 70417932475495769964322670258947,219302242655748448462474951981229489200

%N Number of n X n 0..9 arrays with row sums 9 and column sums 9.

%H R. H. Hardin, <a href="/A172958/b172958.txt">Table of n, a(n) for n = 0..15</a>

%Y Column k=9 of A257493.

%K nonn

%O 0,3

%A _R. H. Hardin_, Feb 06 2010