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A300933 Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
8, 50, 143, 505, 1534, 4781, 15292, 48838, 158036, 513942, 1667199, 5414178, 17564422, 56945634, 184689939, 599062331, 1943671897, 6307957298, 20474330692, 66462754716, 215762437471, 700476249766, 2274214050189, 7383913075835 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A300937.

LINKS

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

R. H. Hardin, Empirical recurrence of order 95

FORMULA

Empirical recurrence of order 95 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300937.

Sequence in context: A282774 A258635 A300494 * A300877 A301487 A299686

Adjacent sequences:  A300930 A300931 A300932 * A300934 A300935 A300936

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 16 2018

STATUS

approved

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Last modified November 27 12:51 EST 2021. Contains 349394 sequences. (Running on oeis4.)