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A303966 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero. 1
8, 53, 54, 173, 452, 1014, 2247, 5247, 11995, 27818, 65183, 151096, 349718, 812569, 1885211, 4372093, 10150580, 23557507, 54656120, 126843786, 294365563, 683067821, 1585148651, 3678564016, 8536369009, 19809524756, 45970295904 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A303969.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +3*a(n-3) -2*a(n-4) -2*a(n-5) +7*a(n-6) -13*a(n-7) -6*a(n-8) -11*a(n-9) +a(n-10) +2*a(n-11) -9*a(n-12) +21*a(n-13) +15*a(n-14) +21*a(n-15) +2*a(n-16) +a(n-18) -10*a(n-19) -9*a(n-20) -13*a(n-21) -a(n-22) +2*a(n-24) for n>35

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303969.

Sequence in context: A199700 A302865 A116171 * A304928 A305344 A316612

Adjacent sequences:  A303963 A303964 A303965 * A303967 A303968 A303969

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 03 2018

STATUS

approved

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Last modified January 16 22:12 EST 2022. Contains 350376 sequences. (Running on oeis4.)