A147414 - OEIS

A147414

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1111-0110 pattern in any orientation.

1, 1, 1, 5, 1, 11, 9, 68, 153, 1684, 1679, 71570, 36923, 5414251, 2307043, 500915628, 344960766, 114097346426, 84657360537, 60278905221018, 32340840584502, 57465415940963552, 25612067643691049, 97100554928558169851

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

Maximal 8 X 8 example

.0.0.1.0.0.1.0.0

.0.0.1.1.1.1.0.0

.1.1.0.1.1.0.1.1

.0.1.1.0.0.1.1.0

.1.1.0.1.1.0.1.1

.0.0.1.1.1.1.0.0

.0.0.1.0.0.1.0.0

CROSSREFS

Sequence in context: A075677 A051853 A159074 * A117637 A332733 A132000

Adjacent sequences: A147411 A147412 A147413 * A147415 A147416 A147417

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved