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

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

R. H. Hardin, Table of n, a(n) for n = 1..37

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

Adjacent sequences: A227020 A227021 A227022 * A227024 A227025 A227026

Keyword

nonn

Author

R. H. Hardin Jun 27 2013

Status

approved