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A299308 Number of n X n 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0
0, 3, 15, 112, 3463, 270346, 60731972, 30975700202, 44405195921475 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299314.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299314.

Sequence in context: A058104 A298390 A299508 * A300109 A056053 A295758

Adjacent sequences: A299305 A299306 A299307 * A299309 A299310 A299311

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2018

STATUS

approved

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Last modified April 1 14:50 EDT 2023. Contains 361695 sequences. (Running on oeis4.)