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A146699 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0010 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 17, 21, 585, 1175, 13235, 33591, 904833, 2777683, 243371641, 949834779, 144264575111, 703897326167, 173395824962595, 1047822171303933, 492478720057422059, 3690926761734236233 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.1.0
.0.1.1.0.0.1.1.0
.1.1.0.0.0.0.1.1
.1.1.0.0.0.0.1.1
CROSSREFS
Sequence in context: A146627 A146635 A146832 * A146707 A146643 A146715
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified March 29 05:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)