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A001045 Jacobsthal sequence (or Jacobsthal numbers): a(n) = a(n-1) + 2a(n-2), with a(0) = 0, a(1) = 1.
(Formerly M2482 N0983)
+0
442
0, 1, 1, 3, 5, 11, 21, 43, 85, 171, 341, 683, 1365, 2731, 5461, 10923, 21845, 43691, 87381, 174763, 349525, 699051, 1398101, 2796203, 5592405, 11184811, 22369621, 44739243, 89478485, 178956971, 357913941, 715827883, 1431655765, 2863311531 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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