A146389 Number of n X n binary arrays with all ones connected only in a 1000-1100-0111 pattern in any orientation.

1, 1, 1, 17, 85, 693, 9501, 265597, 10400895, 596407005, 55252492651

Offset

1,4

Links

Table of n, a(n) for n=1..11.

Example

Maximal 8 X 8 example
.0.1.1.0.1.1.1.0
.1.1.0.0.0.0.1.1
.1.0.0.1.1.1.0.1
.1.0.0.0.0.1.1.0
.0.1.1.0.0.0.1.0
.1.1.0.1.1.1.0.1
.1.0.1.1.0.0.1.1
.1.0.1.0.1.1.1.0

Crossrefs

Sequence in context: A212487 A288420 A156157 * A328010 A041554 A080770

Adjacent sequences: A146386 A146387 A146388 * A146390 A146391 A146392

Keyword

nonn

Author

R. H. Hardin

Status

approved