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A147502 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1110-0110-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 9, 9, 19, 19, 37, 37, 159, 159, 849, 849, 4243, 4243 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,13
LINKS
EXAMPLE
Maximal 13 X 13 example
.0.0.0.1.0.0.0.0.0.1.0.0.0
.0.0.0.1.1.1.0.1.1.1.0.0.0
.0.0.0.1.1.1.0.1.1.1.0.0.0
.1.1.1.0.0.1.0.1.0.0.1.1.1
.0.1.1.0.0.0.0.0.0.0.1.1.0
.0.1.1.1.0.0.0.0.0.1.1.1.0
.0.0.0.0.0.0.0.0.0.0.0.0.0
.0.1.1.1.0.0.0.0.0.1.1.1.0
.0.1.1.0.0.0.0.0.0.0.1.1.0
.1.1.1.0.0.1.0.1.0.0.1.1.1
.0.0.0.1.1.1.0.1.1.1.0.0.0
.0.0.0.1.1.1.0.1.1.1.0.0.0
.0.0.0.1.0.0.0.0.0.1.0.0.0
CROSSREFS
Sequence in context: A219128 A217964 A086739 * A147343 A147433 A146903
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)