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A298215 Number of nX2 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. 8
2, 7, 13, 29, 73, 157, 353, 869, 1993, 4557, 10993, 25909, 60313, 144157, 343233, 809349, 1929833, 4610157, 10953873, 26130389, 62487353, 149069757, 356015713, 851720229, 2035889673, 4867238157, 11647445553, 27867454069, 66671141593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A298221.

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) -5*a(n-2) +10*a(n-3) -24*a(n-4) +16*a(n-5) for n>6

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A298221.

Sequence in context: A141777 A297883 A215206 * A127396 A294839 A231478

Adjacent sequences:  A298212 A298213 A298214 * A298216 A298217 A298218

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2018

STATUS

approved

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Last modified January 18 09:26 EST 2022. Contains 350454 sequences. (Running on oeis4.)