OFFSET
1,2
FORMULA
A = B + C with A = Gamma(1/3)*(e/9)^(1/3) and C = 1/(1+2/(1+3/(1+5/(1+6/(1+8/(1+9/(1+11/(1+. .)))))))).
EXAMPLE
1.28957855637...
MATHEMATICA
E^(1/3)*(Gamma[1/3] - Gamma[1/3, 1/3])/3^(2/3) // RealDigits[#, 10, 105]& // First (* Jean-François Alcover, Feb 22 2013 *)
PROG
(PARI) B=sum(n=1, 100, 1./prod(k=0, n-1, 3*k+1)) /* Paul D. Hanna */
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Philippe Deléham, Jun 22 2005
EXTENSIONS
More terms from Paul D. Hanna, Jun 25 2005
STATUS
approved