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A146373 Number of n X n binary arrays with all ones connected only in a 0100-1111-0100 pattern in any orientation. 0
1, 1, 1, 9, 25, 125, 1331, 18779, 389231, 11969301, 573650431, 41782304071, 4475707668912, 731606853804073, 181071469572900858 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.1.0.0.0.0.0.0
.1.1.1.1.0.0.0.0
.0.1.0.0.0.0.1.0
.0.0.0.0.0.1.1.1
.0.1.0.0.1.0.1.0
.1.1.1.0.1.0.1.0
.0.1.0.1.1.1.0.0
.0.1.0.0.1.0.0.0
CROSSREFS
Sequence in context: A139818 A227078 A146365 * A084605 A098773 A089998
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 4 02:53 EST 2024. Contains 370522 sequences. (Running on oeis4.)