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A300134 Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
1, 2, 17, 27, 204, 667, 3273, 13765, 61625, 274285, 1228282, 5529841, 24957788, 112961986, 512253158, 2326430359, 10578069580, 48139988666, 219231141289, 998905339724, 4553219524921, 20760813969392, 94682609907643 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A300138.

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) +14*a(n-2) -31*a(n-3) -116*a(n-4) +19*a(n-5) +283*a(n-6) +152*a(n-7) +65*a(n-8) +179*a(n-9) -731*a(n-10) -1210*a(n-11) +271*a(n-12) +1279*a(n-13) +488*a(n-14) -481*a(n-15) -349*a(n-16) +435*a(n-17) +266*a(n-18) -478*a(n-19) -284*a(n-20) +202*a(n-21) +80*a(n-22) -93*a(n-23) -2*a(n-24) +46*a(n-25) +6*a(n-26) -8*a(n-27) -2*a(n-28) for n>29

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300138.

Sequence in context: A164275 A284646 A270344 * A171605 A018759 A132146

Adjacent sequences:  A300131 A300132 A300133 * A300135 A300136 A300137

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 26 2018

STATUS

approved

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Last modified January 15 09:11 EST 2021. Contains 340186 sequences. (Running on oeis4.)