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A147354
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-0110-1111 pattern in any orientation.
+0
1
1, 1, 1, 5, 1, 9, 9, 64, 169, 2060, 1751, 117702, 30379, 5432661, 2655229, 490197084, 609857434, 163861816417, 142845961897, 117181491908400, 48229913065428, 107790147306614349, 44573112130566379, 164640449018425801557
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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