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A147035 Number of n X n binary arrays with all ones connected only in a 0100-0100-1111-0100 pattern in any orientation. 0
1, 1, 1, 5, 17, 39, 181, 1975, 28231, 443863, 9105701, 306959063, 15386456557, 1024328375043, 94252026378527 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Maximal 8 X 8 example

.0.0.1.0.0.0.1.0

.1.1.1.1.0.0.1.0

.0.0.1.0.1.1.1.1

.0.0.1.0.0.0.1.0

.0.1.0.0.0.1.0.0

.0.1.0.0.1.1.1.1

.1.1.1.1.0.1.0.0

.0.1.0.0.0.1.0.0

CROSSREFS

Sequence in context: A146717 A147467 A146272 * A146134 A011931 A260981

Adjacent sequences:  A147032 A147033 A147034 * A147036 A147037 A147038

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified June 19 08:41 EDT 2018. Contains 305581 sequences. (Running on oeis4.)