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A305242 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero. 1
16, 64, 86, 273, 1134, 3288, 11731, 39986, 136448, 468584, 1601600, 5492380, 18813625, 64449531, 220814816, 756519295, 2591868086, 8879795487, 30422648705, 104229316206, 357094000366, 1223419607435, 4191489089288, 14360224506528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A305245.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +7*a(n-2) +10*a(n-3) -2*a(n-4) -37*a(n-5) -73*a(n-6) -32*a(n-7) +81*a(n-8) +136*a(n-9) +94*a(n-10) +80*a(n-11) +98*a(n-12) -79*a(n-13) -230*a(n-14) -294*a(n-15) -395*a(n-16) -145*a(n-17) +212*a(n-18) +255*a(n-19) +184*a(n-20) +258*a(n-21) +300*a(n-22) -22*a(n-23) -40*a(n-24) -148*a(n-25) -222*a(n-26) -4*a(n-27) -28*a(n-28) +14*a(n-29) +6*a(n-30) +24*a(n-31) +26*a(n-32) -6*a(n-33) -4*a(n-34) for n>42

EXAMPLE

Some solutions for n=5

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

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

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

CROSSREFS

Cf. A305245.

Sequence in context: A322449 A117453 A340588 * A039370 A324880 A304476

Adjacent sequences:  A305239 A305240 A305241 * A305243 A305244 A305245

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 28 2018

STATUS

approved

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Last modified October 25 16:07 EDT 2021. Contains 348255 sequences. (Running on oeis4.)