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A119462 Triangle read by rows: T(n,k) is the number of circular binary words of length n having k occurrences of 01 (0<=k<=floor(n/2)). +0
2
1, 2, 2, 2, 2, 6, 2, 12, 2, 2, 20, 10, 2, 30, 30, 2, 2, 42, 70, 14, 2, 56, 140, 56, 2, 2, 72, 252, 168, 18, 2, 90, 420, 420, 90, 2, 2, 110, 660, 924, 330, 22, 2, 132, 990, 1848, 990, 132, 2, 2, 156, 1430, 3432, 2574, 572, 26, 2, 182, 2002, 6006, 6006, 2002, 182, 2, 2, 210, 2730 (list; graph; listen)
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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.


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