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Number of 5Xn arrays containing n copies of 0..5-1 with column sums equal.
1

%I #6 Aug 12 2016 06:54:17

%S 120,19800,4140000,1007460000,269568000000,76711698000000,

%T 22777407360000000,6975554646600000000,2187027926856000000000,

%U 698458000786920000000000,226405769680425600000000000

%N Number of 5Xn arrays containing n copies of 0..5-1 with column sums equal.

%C Row 5 of A268472.

%H R. H. Hardin, <a href="/A268474/b268474.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=2

%e ..0..3. .3..1. .0..4. .0..2. .0..3. .2..1. .0..1. .2..4. .0..0. .3..1

%e ..2..2. .2..0. .2..0. .4..3. .2..0. .2..0. .4..2. .1..2. .3..1. .0..2

%e ..4..1. .1..2. .3..3. .4..3. .1..4. .3..1. .2..3. .3..3. .2..2. .3..1

%e ..4..1. .0..3. .4..1. .1..0. .3..2. .3..4. .4..3. .0..1. .4..4. .4..2

%e ..0..3. .4..4. .1..2. .1..2. .4..1. .0..4. .0..1. .4..0. .1..3. .0..4

%Y Cf. A268472.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 05 2016