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Number of 3*n X 15 0..2 arrays with row sums 5 and column sums n
1

%I #4 Mar 31 2012 12:35:40

%S 756756,19292117692187340,1392491976667637592480814080,

%T 203165913750358400342600887093908501900,

%U 43953912340166344641202095832376782984770776827056

%N Number of 3*n X 15 0..2 arrays with row sums 5 and column sums n

%H R. H. Hardin, <a href="/A172670/b172670.txt">Table of n, a(n) for n=1..13</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010