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A300376 Number of nX4 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 10, 11, 26, 80, 237, 692, 2548, 8240, 26808, 92281, 309903, 1039489, 3527966, 11931702, 40287280, 136366907, 461541474, 1560895810, 5282067585, 17874953308, 60478794740, 204650044415, 692516520567, 2343315563850, 7929361264807 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A300380.

LINKS

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

R. H. Hardin, Empirical recurrence of order 80

FORMULA

Empirical recurrence of order 80 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300380.

Sequence in context: A309357 A051803 A082517 * A136828 A136833 A056067

Adjacent sequences:  A300373 A300374 A300375 * A300377 A300378 A300379

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 04 2018

STATUS

approved

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Last modified January 29 01:54 EST 2020. Contains 331328 sequences. (Running on oeis4.)