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A303797 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero. 1
16, 64, 70, 231, 562, 1406, 2829, 7014, 16337, 38826, 88805, 212475, 497950, 1172384, 2743484, 6481122, 15220337, 35799435, 84126471, 198051064, 465547526, 1094919815, 2574744067, 6056506720, 14241574199, 33493922931, 78769404889 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A303800.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +3*a(n-2) +a(n-3) +6*a(n-4) -11*a(n-5) -18*a(n-6) +7*a(n-7) -4*a(n-8) +2*a(n-9) +24*a(n-10) -4*a(n-11) +3*a(n-12) +5*a(n-13) -10*a(n-14) +a(n-15) -4*a(n-16) -a(n-17) +a(n-18) for n>24

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303800.

Sequence in context: A322032 A090567 A255660 * A118902 A092210 A320892

Adjacent sequences:  A303794 A303795 A303796 * A303798 A303799 A303800

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 30 2018

STATUS

approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)