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A247036
Decimal expansion of 2*G/(Pi*log(2)), a constant appearing in the average root bifurcation ratio of binary trees, where G is Catalan's constant.
1
8, 4, 1, 2, 6, 6, 9, 4, 0, 7, 2, 4, 7, 3, 0, 4, 7, 1, 8, 8, 9, 3, 4, 8, 8, 6, 0, 2, 5, 4, 7, 3, 4, 3, 6, 2, 0, 2, 6, 3, 1, 7, 6, 2, 4, 5, 6, 0, 0, 1, 6, 8, 9, 8, 7, 8, 3, 1, 7, 9, 6, 9, 3, 4, 9, 9, 1, 8, 5, 9, 6, 5, 2, 3, 3, 5, 1, 6, 3, 2, 3, 3, 4, 2, 4, 4, 4, 1, 9, 7, 2, 4, 3, 7, 1, 4, 6, 7, 3, 5, 7, 2, 5
OFFSET
0,1
COMMENTS
Apart from initial digits the same as A245250.
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Sections 1.7 Catalan's constant p.54, and 5.6 Otter's Tree Enumeration Constants, p. 311.
LINKS
Yinsong Chen and Vladislav Kargin, On enumeration and entropy of ribbon tilings, The Electronic Journal of Combinatorics 30(2) (2023), #P2.15. See p. 3.
EXAMPLE
0.84126694072473047188934886025473436202631762456...
MATHEMATICA
RealDigits[2 Catalan/(Pi*Log[2]), 10, 103] // First
PROG
(PARI) default(realprecision, 100); 2*Catalan/(Pi*log(2)) \\ G. C. Greubel, Aug 25 2018
(Magma) SetDefaultRealField(RealField(100)); R:=RealField(); 2*Catalan(R)/(Pi(R)*Log(2)); // G. C. Greubel, Aug 25 2018
CROSSREFS
Sequence in context: A039662 A228496 A259616 * A371861 A202320 A011267
KEYWORD
nonn,cons,easy
AUTHOR
STATUS
approved