A093607 Let b(0)=1; b(1)=1; b(n+2) = (Pi^2/6 + 6/Pi^2)*b(n+1) - b(n). a(n) = floor(b(n)).

1, 1, 2, 4, 7, 12, 20, 33, 54, 90, 148, 244, 401, 660, 1086, 1786, 2939, 4835, 7953, 13082, 21520, 35399, 58230, 95785, 157560, 259175, 426327, 701280, 1153559, 1897529, 3121310, 5134350, 8445667, 13892566, 22852355, 37590617, 61834088

Offset

0,3

Comments

a(n+1)/a(n) converges to Pi^2/6 (A013661).

Links

Table of n, a(n) for n=0..36.

Crossrefs

Cf. A013661, A090039, A090426, A090427, A093608.

Sequence in context: A222036 A000071 A179111 * A005182 A329397 A172524

Adjacent sequences: A093604 A093605 A093606 * A093608 A093609 A093610

Keyword

nonn

Author

Gary W. Adamson, Apr 04 2004

Extensions

Edited by Don Reble, Nov 14 2005

Status

approved