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A302424 Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 25, 38, 83, 372, 992, 2503, 7611, 21321, 57872, 165477, 466562, 1295244, 3650383, 10273619, 28731647, 80699298, 226782203, 635782434, 1784439210, 5010891107, 14059108195, 39455529673, 110758862832, 310832105329, 872338548750 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A302427.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +a(n-2) +21*a(n-3) -11*a(n-4) -9*a(n-5) -149*a(n-6) +82*a(n-7) +36*a(n-8) +514*a(n-9) -390*a(n-10) -78*a(n-11) -888*a(n-12) +942*a(n-13) +22*a(n-14) +646*a(n-15) -1008*a(n-16) +68*a(n-17) +48*a(n-18) +368*a(n-19) -288*a(n-21) for n>24

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302427.

Sequence in context: A160758 A015804 A352978 * A244276 A161448 A031096

Adjacent sequences: A302421 A302422 A302423 * A302425 A302426 A302427

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 07 2018

STATUS

approved

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Last modified December 1 11:19 EST 2022. Contains 358468 sequences. (Running on oeis4.)