A172822 - OEIS

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A172822

Number of n X n 0..4 arrays with row sums n and column sums n

%I #4 Mar 31 2012 12:35:41

%S 1,3,55,10147,21107931,511508441781,150603715387867113,

%T 555249505892003620997475,26159597034338175244538552103907,

%U 16021054958659349444630042183181806132953

%N Number of n X n 0..4 arrays with row sums n and column sums n

%H R. H. Hardin, <a href="/A172822/b172822.txt">Table of n, a(n) for n=1..12</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 06 2010