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A007909 Expansion of (1-x)/(1-2*x+x^2-2*x^3). +0
7
1, 1, 1, 3, 7, 13, 25, 51, 103, 205, 409, 819, 1639, 3277, 6553, 13107, 26215, 52429, 104857, 209715, 419431, 838861, 1677721, 3355443, 6710887, 13421773, 26843545, 53687091, 107374183, 214748365, 429496729, 858993459, 1717986919, 3435973837, 6871947673 (list; graph; listen)
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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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