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A299003 Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. 1
4, 26, 94, 372, 1510, 6105, 24546, 98995, 399424, 1610936, 6496983, 26205472, 105698076, 426321495, 1719528280, 6935574134, 27974034790, 112830828296, 455093402265, 1835579965589, 7403653180460, 29861995650489, 120445781051920 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A299008.

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) -4*a(n-2) +5*a(n-3) -16*a(n-4) -19*a(n-5) +35*a(n-6) -5*a(n-7) +54*a(n-8) -94*a(n-9) +3*a(n-11) +74*a(n-12) +33*a(n-13) -21*a(n-14) -17*a(n-15) -8*a(n-16) -11*a(n-17) -4*a(n-18) for n>19

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A299008.

Sequence in context: A299847 A118285 A101166 * A299670 A299748 A300262

Adjacent sequences: A299000 A299001 A299002 * A299004 A299005 A299006

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 2018

STATUS

approved

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Last modified December 9 10:59 EST 2022. Contains 358700 sequences. (Running on oeis4.)