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A226991
Number of nX5 0..4 arrays of sums of 2X2 subblocks of some (n+1)X6 binary array with rows and columns of the latter in lexicographically nondecreasing order
1
28, 729, 11325, 180712, 2601925, 33118416, 369163839, 3630637294, 31856129416, 252318062428, 1823504154187, 12137736643546, 75012367805101, 433388500017180, 2354668881960077, 12091925893979800, 58950535990057164
OFFSET
1,1
COMMENTS
Column 5 of A226992
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..2..3....0..0..0..1..2....0..0..1..2..2....0..0..1..3..4
..1..2..2..1..1....0..1..2..2..1....1..2..3..4..3....1..2..2..2..2
..3..4..2..0..0....0..2..4..3..2....2..2..3..4..3....2..4..2..0..0
..4..4..3..1..0....1..2..3..3..3....3..2..3..4..2....3..4..3..1..0
CROSSREFS
Sequence in context: A185987 A004293 A012808 * A277060 A229463 A097834
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2013
STATUS
approved