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A304130 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero. 1
8, 31, 33, 80, 176, 320, 582, 1112, 2178, 4222, 8066, 15568, 30220, 58392, 112902, 218678, 423402, 820096, 1588910, 3078264, 5965222, 11561350, 22406984, 43430950, 84187876, 163195112, 316358564, 613292350, 1188948430, 2304970530, 4468634064 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A304133.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +8*a(n-3) -3*a(n-4) -23*a(n-6) -4*a(n-7) -4*a(n-8) +26*a(n-9) +19*a(n-10) +8*a(n-11) -10*a(n-12) -19*a(n-13) -4*a(n-14) +6*a(n-16) for n>22

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304133.

Sequence in context: A226968 A303679 A304218 * A305479 A302306 A067950

Adjacent sequences: A304127 A304128 A304129 * A304131 A304132 A304133

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 07 2018

STATUS

approved

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Last modified December 8 03:48 EST 2022. Contains 358672 sequences. (Running on oeis4.)