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A302160 Number of nX5 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 25, 20, 51, 140, 280, 621, 1451, 3189, 7136, 16179, 36212, 81254, 182957, 410889, 922943, 2074950, 4662563, 10476618, 23545560, 52912545, 118903861, 267210837, 600490496, 1349441183, 3032538210, 6814874446, 15314690189, 34415928927 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A302163.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +a(n-2) +7*a(n-3) -3*a(n-4) -3*a(n-5) -14*a(n-6) +3*a(n-7) +2*a(n-8) +9*a(n-9) -2*a(n-10) -2*a(n-12) for n>15

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302163.

Sequence in context: A103954 A217012 A200838 * A122984 A254341 A188477

Adjacent sequences:  A302157 A302158 A302159 * A302161 A302162 A302163

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 02 2018

STATUS

approved

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Last modified April 24 16:06 EDT 2019. Contains 322430 sequences. (Running on oeis4.)