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A305337 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero. 1
16, 22, 62, 267, 1185, 5296, 23348, 103641, 460756, 2046399, 9088119, 40370825, 179335171, 796607658, 3538564896, 15718586255, 69823075114, 310158698286, 1377746229561, 6120044447583, 27185659117549, 120760569582498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A305340.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +8*a(n-2) +14*a(n-3) +13*a(n-4) -49*a(n-5) -137*a(n-6) -103*a(n-7) -a(n-8) +186*a(n-9) +345*a(n-10) +171*a(n-11) -115*a(n-12) -301*a(n-13) -321*a(n-14) -65*a(n-15) +251*a(n-16) +311*a(n-17) +148*a(n-18) -58*a(n-19) -206*a(n-20) -188*a(n-21) -38*a(n-22) +50*a(n-23) +58*a(n-24) +43*a(n-25) +2*a(n-26) -18*a(n-27) -8*a(n-28) +4*a(n-30) +4*a(n-31) +a(n-32) for n>34

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305340.

Sequence in context: A304601 A165338 A154877 * A322344 A316417 A100999

Adjacent sequences:  A305334 A305335 A305336 * A305338 A305339 A305340

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 30 2018

STATUS

approved

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Last modified May 25 15:24 EDT 2019. Contains 323572 sequences. (Running on oeis4.)