A104123 Decimal expansion of the constant c = sqrt((137 - 1/(57+sqrt(Pi)/10))/(2*Pi)), an approximation to the Feigenbaum bifurcation velocity constant delta (A006890).

4, 6, 6, 9, 2, 0, 1, 6, 0, 9, 1, 8, 3, 4, 9, 2, 4, 5, 1, 4, 5, 0, 6, 6, 1, 8, 9, 4, 0, 5, 2, 3, 3, 0, 6, 1, 9, 5, 1, 6, 9, 6, 6, 1, 0, 5, 5, 5, 8, 6, 9, 4, 3, 6, 6, 2, 9, 7, 8, 2, 7, 2, 5, 3, 9, 7, 8, 4, 4, 7, 0, 7, 2, 7, 7, 6, 2, 6, 6, 7, 4, 8, 0, 6, 6, 9, 9, 8, 4, 8, 0, 4, 1, 8, 4, 4, 3, 2, 0, 1, 4, 8, 7, 4, 0

Offset: 1

Author

Gerald McGarvey, Mar 06 2005

Keywords

• cons
• nonn

Comments

c - delta = 0.000000000080501779597..., Gamma(delta) - InverseGamma(1/(c-delta)) = 0.50050037514..., log(log(1/(c-d))) - Pi = 0.00440025013324...

Examples

			4.669201609183492451450661894052330619516966105558694366297827...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A006890.

Programs

Mathematica

RealDigits[Sqrt[(137 - 1/(57 + Sqrt[Pi]/10))/(2 Pi)], 10, 110][[1]]

PARI

sqrt((137 - 1/(57 + sqrt(Pi)/10))/(2*Pi)) \\ G. C. Greubel, Jan 13 2017