A147411 - OEIS

A147411

Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1001-1001-1111 pattern in any orientation.

1, 1, 1, 1, 1, 1, 1, 5, 13, 27, 43, 73, 179, 423, 1083, 3071, 10101, 37829, 144853, 562367, 2218397, 9164725, 42914033, 209532563

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

OFFSET

1,8

LINKS

EXAMPLE

Maximal 8 X 8 example

.1.0.0.1.0.1.1.1

.1.0.0.1.0.1.0.0

.1.1.1.1.0.1.0.0

.0.0.0.0.0.1.1.1

.1.1.1.0.0.0.0.0

.0.0.1.0.1.1.1.1

.0.0.1.0.1.0.0.1

.1.1.1.0.1.0.0.1

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved