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A050253 G.f.: ( 1 - x^2 - Sqrt[ 1 - 2 x^2 - 4 x^3 - 3 x^4 ] ) / ( 2 x^3 ). +0
2
1, 1, 1, 2, 3, 5, 9, 16, 29, 54, 101, 191, 365, 702, 1359, 2647, 5181, 10187, 20113, 39856, 79243, 158036, 316053, 633689, 1273559, 2565136, 5177043, 10468199, 21204379, 43022215, 87423573, 177906552, 362531425, 739700055, 1511091377 (list; graph; listen)
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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