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A185984 1/128 the number of (n+2) X (n+2) binary arrays with each 3 X 3 subblock trace equal to some horizontal or vertical neighbor 3 X 3 subblock trace. 0
0, 76, 8948, 2854756, 2340935640, 5140797159777, 29671205957160911, 453752833171594711936, 18348281443087840943497571 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A185993.

LINKS

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

EXAMPLE

Some solutions for 4 X 4:

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

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

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

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

CROSSREFS

Cf. A185993.

Sequence in context: A093276 A184290 A093238 * A289227 A028480 A229413

Adjacent sequences:  A185981 A185982 A185983 * A185985 A185986 A185987

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Feb 08 2011

STATUS

approved

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Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)