A297821 - OEIS

A297821

Number of nX6 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero.

5, 573, 1114, 4306, 14237, 46701, 146530, 456814, 1433279, 4501076, 14136685, 44497190, 140143464, 441400791, 1390241695, 4379846806, 13801547551, 43497337265, 137100786459, 432178740943, 1362480439721, 4295731507860

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OFFSET

1,1

COMMENTS

Column 6 of A297823.

LINKS

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

R. H. Hardin, Empirical recurrence of order 98

FORMULA

Empirical recurrence of order 98 (see link above)

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A297823.

Sequence in context: A241802 A274081 A153404 * A297991 A298844 A298651

Adjacent sequences: A297818 A297819 A297820 * A297822 A297823 A297824

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 06 2018

STATUS

approved