OFFSET
1,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..10000
John H. Conway and Michael J. T. Guy, Pi in Four 4's, Eureka, The Archimedeans' Journal, Vol. 25 (1962), pp. 18-19.
FORMULA
Equals Gamma(1/2)^(1/2). - Bruno Berselli, Mar 01 2013
Equals lim_{n->oo} 2^n*n!/(sqrt((2*n)!)*n^(1/4)) (Conway and Guy, 1962). - Amiram Eldar, Feb 19 2022
EXAMPLE
1.3313353638003897127975349179502808533093662238181042...
MATHEMATICA
RealDigits[(Pi)^(1/4), 10, 100][[1]] (* Vincenzo Librandi, Mar 01 2013 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Mohammad K. Azarian, Mar 27 2004
STATUS
approved