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Number of nX5 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.
1

%I #4 Nov 27 2016 06:49:16

%S 56,3492,306070,30942600,3062815568,279368748599,23161560633508,

%T 1747727428639023,120668752462156921,7668150385606788285,

%U 451008119329650593967,24676136165708649853590,1261674436562343441025436

%N Number of nX5 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

%C Column 5 of A278727.

%H R. H. Hardin, <a href="/A278724/b278724.txt">Table of n, a(n) for n = 1..53</a>

%e Some solutions for n=2

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

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

%Y Cf. A278727.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 27 2016