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A304772 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3 or 7 king-move adjacent elements, with upper left element zero. 1
16, 120, 139, 443, 1581, 5060, 15349, 50030, 160513, 515542, 1670115, 5376672, 17346725, 55998720, 180570241, 582651967, 1879783901, 6063962633, 19564352043, 63116727780, 203622739528, 656925290314, 2119330163412, 6837291061530 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A304775.

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) -4*a(n-2) +11*a(n-3) -29*a(n-4) +47*a(n-5) -79*a(n-6) +95*a(n-7) -99*a(n-8) +108*a(n-9) -43*a(n-10) -25*a(n-11) +69*a(n-12) -154*a(n-13) +158*a(n-14) -144*a(n-15) +133*a(n-16) -42*a(n-17) +5*a(n-19) -31*a(n-20) +45*a(n-21) -36*a(n-22) +6*a(n-23) +10*a(n-24) -4*a(n-25) for n>28

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304775.

Sequence in context: A093740 A303724 A305227 * A316515 A304469 A316286

Adjacent sequences:  A304769 A304770 A304771 * A304773 A304774 A304775

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 18 2018

STATUS

approved

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Last modified September 24 12:59 EDT 2022. Contains 356932 sequences. (Running on oeis4.)