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A298439 Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1
1, 1, 11, 2, 27, 36, 86, 162, 368, 727, 1536, 3227, 6657, 14037, 29089, 61102, 127035, 266162, 554714, 1160052, 2421034, 5058677, 10563272, 22064711, 46083287, 96250175, 201033571, 419875536, 876978777, 1831656308, 3825692016, 7990395794 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A298444.

LINKS

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

FORMULA

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298444.

Sequence in context: A336904 A051309 A077344 * A095157 A110767 A089365

Adjacent sequences:  A298436 A298437 A298438 * A298440 A298441 A298442

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 2018

STATUS

approved

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Last modified June 13 20:25 EDT 2021. Contains 345009 sequences. (Running on oeis4.)