A302149 - OEIS

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A302149

Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

1, 10, 88, 1038, 12212, 145150, 1728734, 20614702, 245896061, 2933505447, 34997746793, 417542364526, 4981538616301, 59432971386326, 709074352774052, 8459725853179692, 100930145043164198, 1204163804664423408

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 7 of A302150.

LINKS

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

R. H. Hardin, Empirical recurrence of order 51

FORMULA

Empirical recurrence of order 51 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302150.

Sequence in context: A264320 A298134 A163030 * A269008 A000826 A282555

Adjacent sequences: A302146 A302147 A302148 * A302150 A302151 A302152

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 02 2018

STATUS

approved