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A304299 Number of nX5 0..1 arrays with every element unequal to 1, 2, 5 or 8 king-move adjacent elements, with upper left element zero. 1
3, 8, 6, 13, 62, 88, 339, 888, 2108, 6329, 16064, 43396, 117393, 310556, 838566, 2237425, 5994192, 16070962, 42980591, 115197362, 308417124, 825876409, 2212071620, 5923132330, 15863081325, 42480892952, 113761890098, 304659172431 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A304302.

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-2) +14*a(n-3) +5*a(n-4) -12*a(n-5) -59*a(n-6) -17*a(n-7) +17*a(n-8) +105*a(n-9) -2*a(n-10) -43*a(n-11) -103*a(n-12) +51*a(n-13) +109*a(n-14) +77*a(n-15) -63*a(n-16) -97*a(n-17) -17*a(n-18) +57*a(n-19) +11*a(n-20) -16*a(n-21) -4*a(n-22) +12*a(n-23) -10*a(n-24) -5*a(n-25) +28*a(n-26) +12*a(n-27) -22*a(n-28) -6*a(n-29) +10*a(n-30) -2*a(n-32) for n>34

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304302.

Sequence in context: A080939 A155724 A289485 * A221951 A276574 A276584

Adjacent sequences:  A304296 A304297 A304298 * A304300 A304301 A304302

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 10 2018

STATUS

approved

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Last modified April 24 22:03 EDT 2019. Contains 322446 sequences. (Running on oeis4.)