A147489 - OEIS

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A147489

Number of n X n binary arrays with all ones connected only in a 11101-10111 pattern in any orientation.

1, 1, 1, 1, 25, 137, 521, 6501, 70441, 694381, 20946853, 656540805, 20990265609

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

OFFSET

1,5

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Maximal 8 X 8 example

.1.1.0.1.0.1.1.1

.1.0.0.1.1.1.0.1

.1.1.0.0.0.0.0.0

.0.1.0.0.0.0.1.1

.1.1.0.0.0.0.1.0

.0.0.0.0.0.0.1.1

.1.1.1.0.1.0.0.1

.1.0.1.1.1.0.1.1

CROSSREFS

Sequence in context: A367104 A364194 A317217 * A156158 A195977 A233368

Adjacent sequences: A147486 A147487 A147488 * A147490 A147491 A147492

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved