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A301445 Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
4, 29, 171, 1008, 5930, 34976, 206266, 1216562, 7175157, 42318566, 249591629, 1472072549, 8682172154, 51206792942, 302013780922, 1781254373986, 10505703200049, 61961840678551, 365446236883416, 2155374188205965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A301450.

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) +7*a(n-2) -10*a(n-3) -a(n-4) +7*a(n-5) -17*a(n-6) +5*a(n-8) -11*a(n-9) +5*a(n-10) -2*a(n-12) +2*a(n-13)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301450.

Sequence in context: A302803 A300806 A303464 * A198794 A258416 A079885

Adjacent sequences:  A301442 A301443 A301444 * A301446 A301447 A301448

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 21 2018

STATUS

approved

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Last modified January 18 04:26 EST 2022. Contains 350410 sequences. (Running on oeis4.)