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A299355 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 70, 649, 8269, 121386, 2195326, 55671460, 2065637548, 105768593369, 7817766240120, 873950649404684, 140851588459236089 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299359.

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299359.

Sequence in context: A190560 A266361 A298281 * A299175 A299938 A152263

Adjacent sequences:  A299352 A299353 A299354 * A299356 A299357 A299358

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 2018

STATUS

approved

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Last modified August 16 12:15 EDT 2022. Contains 356168 sequences. (Running on oeis4.)