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A101399
a(0) = 1, a(1) = 2, a(2) = 5; for n >= 3, a(n) = a(n - 1) + 2*a(n - 2) + a(n - 3)
+0
6
1, 2, 5, 10, 22, 47, 101, 217, 466, 1001, 2150, 4618, 9919, 21305, 45761, 98290, 211117, 453458, 973982, 2092015, 4493437, 9651449, 20730338, 44526673, 95638798, 205422482, 441226751, 947710513, 2035586497, 4372234274
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Maintained by
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Last modified November 27 14:13 EST 2009. Contains 167514 sequences.
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