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A165901
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a(0)=0, a(1)=1, a(n)=a(n-1)+2^(n-3)*a(n-2)
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1
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0, 1, 1, 2, 4, 12, 44, 236, 1644, 16748, 227180, 4514668, 120830828, 4743850860, 252205386604, 19683018509164, 2085749545569132, 324572324799712108, 68670413434009029484, 21339842291507941739372, 9022108271913939454266220
(list; graph; refs; listen; history; internal format)
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