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The ratio a(n+1)/a(n) tends to 1 + Sqrt(2), A014176.
Table of n, a(n) for n=1..32.
Cf. A175105, A002193.
Sequence in context: A213705 A061902 A166286 * A110113 A137155 A014227
Adjacent sequences: A179804 A179805 A179806 * A179808 A179809 A179810
Mats Granvik, Jul 28 2010