A227023 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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