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A145997 Number of n X n binary arrays with all ones connected only in a 3X3 plus 2,1 2,2 2,3 1,2 3,2. 0
1, 1, 2, 5, 12, 51, 317, 2654, 30351, 489559, 11104536, 350752586, 15493779226, 954798521885, 82299096564021, 9909284745619443, 1667319814728326908, 391914922807260266420, 128722643370894309970881 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.1.0.0.0

.0.1.0.1.1.1.0.0

.1.1.1.0.1.0.1.0

.0.1.0.1.0.1.1.1

.0.0.1.1.1.0.1.0

.0.1.0.1.0.1.0.0

.1.1.1.0.1.1.1.0

.0.1.0.0.0.1.0.0

CROSSREFS

Sequence in context: A183758 A071787 A291484 * A067578 A109139 A038576

Adjacent sequences:  A145994 A145995 A145996 * A145998 A145999 A146000

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 26 2008

STATUS

approved

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Last modified January 22 18:38 EST 2019. Contains 319365 sequences. (Running on oeis4.)