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A302683 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
16, 9, 11, 33, 63, 187, 661, 1837, 5075, 15661, 46975, 135191, 398107, 1187251, 3492697, 10253381, 30301323, 89476359, 263483993, 776726391, 2291909243, 6757855265, 19921284797, 58748244533, 173250475905, 510831651353 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A302680.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +a(n-2) +10*a(n-3) +13*a(n-4) -7*a(n-6) -6*a(n-7) -11*a(n-8) -6*a(n-9) -4*a(n-10) -2*a(n-11) for n>16

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Cf. A302680.

Sequence in context: A070579 A278829 A066905 * A302518 A070567 A257796

Adjacent sequences:  A302680 A302681 A302682 * A302684 A302685 A302686

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 11 2018

STATUS

approved

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Last modified October 15 17:08 EDT 2021. Contains 348033 sequences. (Running on oeis4.)