OFFSET
0,1
COMMENTS
See A091343.
LINKS
Stanislav Sykora, Table of n, a(n) for n = 0..2000
Wikipedia, Dedekind eta function
FORMULA
eta(2*i) = c*eta(i) = c*Gamma(1/4)/(2*Pi^(3/4)) = c*A091343, with c = 2^(-3/8).
EXAMPLE
0.5923827813324158852903633744919953727615299932057706652342...
MATHEMATICA
RealDigits[N[Gamma[1/4]/(2^(11/8)*Pi^(3/4)), 120]][[1]] (* Vaclav Kotesovec, Oct 04 2014 *)
PROG
(PARI) eta(2*I, 1)
CROSSREFS
KEYWORD
AUTHOR
Stanislav Sykora, Oct 04 2014
STATUS
approved