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A299576 Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1
1, 1, 10, 10, 27, 63, 115, 267, 569, 1193, 2587, 5521, 11791, 25273, 54049, 115633, 247475, 529485, 1132947, 2424265, 5187219, 11099285, 23749619, 50817867, 108736971, 232668795, 497850429, 1065270295, 2279401223, 4877325533 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A299581.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +a(n-2) +a(n-3) -4*a(n-4) -2*a(n-5) -2*a(n-6) +a(n-9) for n>13

EXAMPLE

Some solutions for n=5

..0..1..1. .0..0..0. .0..0..1. .0..1..1. .0..0..0. .0..0..0. .0..0..1

..1..1..1. .0..0..0. .0..0..0. .1..1..1. .0..0..0. .0..0..0. .0..0..0

..1..1..1. .0..0..0. .0..0..0. .1..1..1. .1..1..1. .1..1..1. .0..0..0

..0..0..0. .0..0..0. .0..0..0. .1..1..1. .1..1..1. .1..1..1. .1..1..1

..0..0..0. .0..0..0. .0..0..0. .1..1..0. .0..1..1. .1..1..1. .1..1..1

CROSSREFS

Cf. A299581.

Sequence in context: A324494 A344104 A200984 * A185993 A109051 A201027

Adjacent sequences:  A299573 A299574 A299575 * A299577 A299578 A299579

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 13 2018

STATUS

approved

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Last modified January 25 08:59 EST 2022. Contains 350565 sequences. (Running on oeis4.)