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Search: id:A001607
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A001607 a(n) = - a(n-1) - 2a(n-2).
(Formerly M2225 N0883)
+0
11
0, 1, -1, -1, 3, -1, -5, 7, 3, -17, 11, 23, -45, -1, 91, -89, -93, 271, -85, -457, 627, 287, -1541, 967, 2115, -4049, -181, 8279, -7917, -8641, 24475, -7193, -41757, 56143, 27371, -139657, 84915, 194399, -364229, -24569, 753027, -703889 (list; graph; listen)
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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