A296013 - OEIS

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A296013

Number of n X n 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1's.

1, 7, 30, 366, 10703, 437195, 40196846, 7361110427, 2440444635515, 1635743807110941, 2128698320399136899

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

OFFSET

1,2

COMMENTS

Diagonal of A296019.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A296019.

Sequence in context: A343755 A026653 A271554 * A196338 A196315 A156347

Adjacent sequences: A296010 A296011 A296012 * A296014 A296015 A296016

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2017

STATUS

approved