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

1,1

Comments

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

Links

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

Example

4.669201609183492451450661894052330619516966105558694366297827...

Mathematica

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

Prog

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

Crossrefs

Cf. A006890.

Sequence in context: A049089 A028327 A006890 * A094078 A016122 A247677

Adjacent sequences: A104120 A104121 A104122 * A104124 A104125 A104126

Keyword

cons,nonn

Author

Gerald McGarvey, Mar 06 2005

Status

approved