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A301612 Number of nX5 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero. 1
3, 111, 2131, 40085, 758338, 14345706, 271301458, 5131197358, 97045266159, 1835413254015, 34712996298775, 656524254453280, 12416789603607923, 234837748693978527, 4441467446525879000, 84001117092821240904 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A301615.

LINKS

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

R. H. Hardin, Empirical recurrence of order 68

FORMULA

Empirical recurrence of order 68 (see link above)

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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

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

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

CROSSREFS

Cf. A301615.

Sequence in context: A243464 A114738 A111091 * A180765 A232769 A066138

Adjacent sequences:  A301609 A301610 A301611 * A301613 A301614 A301615

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 24 2018

STATUS

approved

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Last modified March 25 01:17 EDT 2019. Contains 321450 sequences. (Running on oeis4.)