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A183457 Number of (n+4)X(n+4) binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s 0
1, 3, 32, 199, 8702, 248303, 15282749, 2019698992, 349874591303 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183465

LINKS

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

EXAMPLE

Some solutions for 7X7

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A221464 A119940 A004256 * A322234 A264574 A002059

Adjacent sequences:  A183454 A183455 A183456 * A183458 A183459 A183460

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified March 20 05:34 EDT 2019. Contains 321344 sequences. (Running on oeis4.)