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A136444 Sum k*binomial(n-k, 2k). +0
7
0, 0, 0, 1, 3, 6, 12, 25, 51, 101, 197, 381, 731, 1392, 2634, 4958, 9290, 17337, 32239, 59760, 110460, 203651, 374593, 687567, 1259597, 2303449, 4205493, 7666560, 13956532, 25374108, 46076436, 83575025, 151431099, 274108826, 495708364, 895670733, 1617003823, 2916984121 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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