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A203561 Number of nX5 0..2 arrays with row sums equal and column sums equal 1

%I #5 Mar 31 2012 12:36:57

%S 3,53,993,32613,2577513,39612503,1509893003,59794281893,2435292751413,

%T 165459828692703,4307041366439903,185658731463324903,

%U 8107975032968711943,358060848206529563813,21242986806159652173693,717973394997481520889893

%N Number of nX5 0..2 arrays with row sums equal and column sums equal

%C Column 5 of A203564

%H R. H. Hardin, <a href="/A203561/b203561.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for n=5

%e ..1..2..2..0..0....1..0..1..1..1....2..2..0..2..1....1..1..2..2..2

%e ..0..0..2..2..1....2..0..0..2..0....0..2..1..2..2....1..2..1..2..2

%e ..1..0..0..2..2....0..2..1..0..1....1..2..2..2..0....2..1..2..1..2

%e ..1..1..0..1..2....0..2..2..0..0....2..0..2..1..2....2..2..1..2..1

%e ..2..2..1..0..0....1..0..0..1..2....2..1..2..0..2....2..2..2..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2012

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)