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A006053 a(n)=a(n-1)+2a(n-2)-a(n-3).
(Formerly M2358)
+0
16
0, 0, 1, 1, 3, 4, 9, 14, 28, 47, 89, 155, 286, 507, 924, 1652, 2993, 5373, 9707, 17460, 31501, 56714, 102256, 184183, 331981, 598091, 1077870, 1942071, 3499720, 6305992, 11363361, 20475625, 36896355, 66484244, 119801329, 215873462 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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