

A305694


Number of lengthn binary words containing no instance of the pattern x y y x^R where x and y are nonempty.


0



1, 2, 4, 8, 12, 18, 22, 28, 38, 50, 56, 68, 84, 102, 118, 142, 172, 204, 228, 264, 308, 358, 412, 478, 558, 654, 764, 892, 1048, 1234, 1404, 1618, 1870, 2152, 2458, 2826, 3256, 3750, 4292, 4940, 5688, 6548, 7518, 8672, 10004, 11520, 13184, 15130, 17364, 19904
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