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A266184 Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any diagonal or antidiagonal neighbor equal to 3-1. 1
6, 22, 88, 296, 1372, 6128, 29552, 147570, 755512, 3945876, 21025260, 113229974, 617874744, 3397997370, 18844357820, 105109392654, 589660050052, 3322222401602, 18796006629928, 106695843736852, 607569787629568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A266183.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..73

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Cf. A266183.

Sequence in context: A003699 A047124 A046365 * A255465 A289603 A240049

Adjacent sequences:  A266181 A266182 A266183 * A266185 A266186 A266187

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 23 2015

STATUS

approved

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Last modified March 18 16:00 EDT 2019. Contains 321292 sequences. (Running on oeis4.)