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A147218
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0101 pattern in any orientation.
+0
1
1, 1, 1, 1, 1, 1, 17, 27, 575, 1091, 10073, 26275, 436817, 1241759, 99221321, 359430255, 57329770665, 261948614931, 43007975306403, 238557155162155, 61726897724737383
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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