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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)). 4
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

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

LINKS

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

CROSSREFS

Cf. A090039, A090426, A090427, A093608.

Sequence in context: A222036 A000071 A179111 * A005182 A172524 A094925

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

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Last modified March 21 20:15 EDT 2019. Contains 321382 sequences. (Running on oeis4.)