A299891 - OEIS

A299891

Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 389, 2800, 77981, 2025352, 55414033, 1611352289, 46538050960, 1360698390084, 39783278147445, 1164889182356192, 34124055565347097, 999756729105547241, 29294587727359499116, 858400260133154421401, 25153773626184474475671

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

OFFSET

1,2

COMMENTS

Column 6 of A299893.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299893.

Sequence in context: A299364 A299133 A205920 * A299058 A299819 A299719

Adjacent sequences: A299888 A299889 A299890 * A299892 A299893 A299894

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 21 2018

STATUS

approved