A298184 - OEIS

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A298184

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

0

0, 1, 1, 3, 5, 10, 19, 41, 81, 196, 474, 1315, 3871, 15716, 68291, 339947, 1851904, 11717321, 86766476

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

OFFSET

1,4

COMMENTS

Diagonal of A298187.

LINKS

Table of n, a(n) for n=1..19.

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A317766 A217925 A018101 * A182536 A158568 A068013

Adjacent sequences: A298181 A298182 A298183 * A298185 A298186 A298187

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 14 2018

STATUS

approved