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A301350 Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
2, 30, 277, 2349, 19561, 165010, 1392131, 11741731, 99032014, 835272398, 7045026710, 59420627072, 501178143148, 4227144439913, 35653491957422, 300716364726693, 2536366776713612, 21392771375921024, 180435523636242529 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A301354.

LINKS

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

R. H. Hardin, Empirical recurrence of order 72

FORMULA

Empirical recurrence of order 72 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301354.

Sequence in context: A300423 A300685 A300608 * A036351 A189770 A245020

Adjacent sequences:  A301347 A301348 A301349 * A301351 A301352 A301353

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 19 2018

STATUS

approved

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Last modified January 21 19:21 EST 2022. Contains 350480 sequences. (Running on oeis4.)