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A172749 Number of 2*n X n 0..3 arrays with row sums 9 and column sums 18 1

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

%S 0,0,1,122975608,552523141020099900,28004870901329112246159413600,

%T 13286253592938310343269948335403784033355,

%U 48077185419930811359972085602422918530347454406137600

%N Number of 2*n X n 0..3 arrays with row sums 9 and column sums 18

%H R. H. Hardin, <a href="/A172749/b172749.txt">Table of n, a(n) for n=1..10</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 06 2010

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Last modified May 8 07:09 EDT 2024. Contains 372319 sequences. (Running on oeis4.)