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A227023
Number of nX4 (0,1,2) arrays of permanents of 2X2 subblocks of some (n+1)X5 binary array with rows and columns of the latter in lexicographically nondecreasing order
1
18, 171, 1366, 10050, 65317, 375270, 1924848, 8908719, 37616613, 146387460, 529743352, 1796459014, 5746888515, 17440783714, 50456503591, 139731086307, 371756133099, 953183208702, 2361809765393, 5669196636680, 13211336518266
OFFSET
1,1
COMMENTS
Column 4 of A227025
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..1....0..0..1..1....0..0..0..1....0..0..0..0....0..0..0..1
..0..1..0..0....0..1..0..0....0..0..1..0....0..0..1..0....0..0..0..2
..2..0..0..0....1..1..0..1....0..1..0..0....0..2..0..0....0..0..0..2
..2..0..0..1....0..0..2..2....0..2..0..0....1..0..1..0....0..0..1..1
CROSSREFS
Sequence in context: A341228 A022583 A321951 * A239581 A213350 A052507
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 27 2013
STATUS
approved