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A302148 Number of nX6 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. 1
1, 6, 34, 255, 2005, 15999, 128319, 1030709, 8283143, 66576711, 535145269, 4301582207, 34576983087, 277937230517, 2234120533079, 17958355078007, 144353239501301, 1160343364887311, 9327097456058015, 74973279259758837 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A302150.

LINKS

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

FORMULA

Empirical: a(n) = 13*a(n-1) -44*a(n-2) +25*a(n-3) +71*a(n-4) -44*a(n-5) -36*a(n-6) +16*a(n-7) for n>9

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302150.

Sequence in context: A267242 A197436 A334787 * A218685 A108432 A337350

Adjacent sequences:  A302145 A302146 A302147 * A302149 A302150 A302151

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 02 2018

STATUS

approved

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Last modified December 5 15:06 EST 2021. Contains 349557 sequences. (Running on oeis4.)