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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

%I

%S 1,1,2,4,7,12,20,33,54,90,148,244,401,660,1086,1786,2939,4835,7953,

%T 13082,21520,35399,58230,95785,157560,259175,426327,701280,1153559,

%U 1897529,3121310,5134350,8445667,13892566,22852355,37590617,61834088

%N 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)).

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

%Y Cf. A090039, A090426, A090427, A093608.

%K nonn

%O 0,3

%A _Gary W. Adamson_, Apr 04 2004

%E Edited by _Don Reble_, Nov 14 2005

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Last modified April 21 20:03 EDT 2019. Contains 322328 sequences. (Running on oeis4.)