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A302474 Number of 4Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 2
0, 34, 250, 1401, 10264, 78679, 584333, 4330427, 32116855, 238854305, 1774890111, 13186901755, 97987405188, 728115173717, 5410378555145, 40202636764567, 298731900955463, 2219776401635593, 16494405056538952, 122564331015474402 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A302472.

LINKS

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

R. H. Hardin, Empirical recurrence of order 63

FORMULA

Empirical recurrence of order 63 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Cf. A302472.

Sequence in context: A233300 A281052 A020872 * A183319 A190422 A209951

Adjacent sequences:  A302471 A302472 A302473 * A302475 A302476 A302477

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 08 2018

STATUS

approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)