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A278724
Number of nX5 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.
1
56, 3492, 306070, 30942600, 3062815568, 279368748599, 23161560633508, 1747727428639023, 120668752462156921, 7668150385606788285, 451008119329650593967, 24676136165708649853590, 1261674436562343441025436
OFFSET
1,1
COMMENTS
Column 5 of A278727.
LINKS
EXAMPLE
Some solutions for n=2
..2..1..1..1..1. .1..0..0..0..0. .3..2..2..1..1. .1..1..1..0..0
..2..2..1..1..0. .1..3..2..2..0. .3..2..2..3..1. .2..2..2..2..0
CROSSREFS
Cf. A278727.
Sequence in context: A264941 A358115 A216704 * A277770 A239816 A220108
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2016
STATUS
approved