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A298283 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. 2
8, 85, 205, 649, 2151, 7006, 22768, 73751, 238775, 774481, 2512751, 8150845, 26436856, 85743702, 278106216, 902050023, 2925843269, 9490084506, 30781419275, 99840712815, 323837616855, 1050381763044, 3406960613177, 11050631235618 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A298287.

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) -6*a(n-2) +6*a(n-3) -21*a(n-4) +24*a(n-5) -36*a(n-6) +16*a(n-7) -6*a(n-8) +112*a(n-9) +70*a(n-10) -83*a(n-11) -186*a(n-12) -135*a(n-13) +122*a(n-14) +164*a(n-15) +54*a(n-16) -82*a(n-17) -63*a(n-18) +18*a(n-19) +38*a(n-20) +17*a(n-21) -15*a(n-22) -6*a(n-23) -2*a(n-24) for n>27

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A298287.

Sequence in context: A258338 A245197 A281340 * A299176 A093103 A288691

Adjacent sequences:  A298280 A298281 A298282 * A298284 A298285 A298286

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 2018

STATUS

approved

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Last modified July 2 17:09 EDT 2022. Contains 355029 sequences. (Running on oeis4.)