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A300535 Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 16, 36, 300, 1436, 8974, 52012, 311037, 1845926, 11005063, 65583577, 390991796, 2331383710, 13900965032, 82892406341, 494278699068, 2947415376806, 17575447550343, 104803246864144, 624945156416678, 3726574928599652 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A300539.

LINKS

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

R. H. Hardin, Empirical recurrence of order 75

FORMULA

Empirical recurrence of order 75 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300539.

Sequence in context: A273373 A264546 A218523 * A053893 A068833 A116190

Adjacent sequences:  A300532 A300533 A300534 * A300536 A300537 A300538

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 08 2018

STATUS

approved

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Last modified November 28 12:54 EST 2021. Contains 349405 sequences. (Running on oeis4.)