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A205230 Number of (n+1)X4 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 1
1187, 27157, 640652, 12273323, 221519116, 3408343704, 48815088704, 628179958745, 7601482985625, 85461685481592, 913975093055739, 9268873184287274, 90266141973458345, 844362225976352539 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A205235

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..2..1..1..1....2..2..1..1....1..1..1..2....0..1..0..2....0..1..2..2

..2..0..2..2....2..0..2..2....0..1..2..2....2..2..2..1....1..1..1..2

..0..1..1..1....1..2..2..1....1..1..1..2....0..2..0..1....0..1..2..2

..2..1..2..0....1..2..1..2....2..1..2..2....2..2..2..1....2..2..0..1

..0..1..1..2....1..2..2..1....2..1..1..0....2..2..2..0....0..2..2..0

CROSSREFS

Sequence in context: A052236 A342066 A153378 * A229539 A233687 A233640

Adjacent sequences:  A205227 A205228 A205229 * A205231 A205232 A205233

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified October 18 21:56 EDT 2021. Contains 348070 sequences. (Running on oeis4.)