A146807 Number of n X n binary arrays with all ones connected only in a 1000-1010-1111 pattern in any orientation.

1, 1, 1, 17, 65, 349, 3731, 77219, 2029815, 63522619, 3272591757, 282134745907

Offset

1,4

Links

Table of n, a(n) for n=1..12.

Example

Maximal 8 X 8 example
.1.1.1.0.1.1.1.1
.1.0.0.0.0.1.0.1
.1.1.0.0.1.0.0.1
.1.0.1.0.1.0.0.0
.0.1.1.1.1.0.0.1
.1.0.0.0.0.0.1.1
.1.0.1.0.0.0.0.1
.1.1.1.1.0.1.1.1

Crossrefs

Sequence in context: A255885 A130885 A036545 * A156570 A147231 A146815

Adjacent sequences: A146804 A146805 A146806 * A146808 A146809 A146810

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved