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A232288 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally 1
1, 15, 1313, 718483, 2885285507, 84130295708483, 17291702408190208843, 25164969879062538935257597, 260198076410481338310694223844235, 19101564590400937625024602276497985649471 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A232295

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..12

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A166330 A300618 A232147 * A183550 A071972 A350994

Adjacent sequences:  A232285 A232286 A232287 * A232289 A232290 A232291

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 22 2013

STATUS

approved

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Last modified September 24 11:27 EDT 2022. Contains 356932 sequences. (Running on oeis4.)