OFFSET
1,2
FORMULA
Equals A002391^2.
Equals Sum_{n >= 0} (-1)^n*(4/3)^(n+1)/((n+1)^2*binomial(2*n+1,n)). See my entry in A002544 dated Apr 18 2017. - Peter Bala, Jan 30 2023
EXAMPLE
1.2069489608125819778437...
MATHEMATICA
RealDigits[Log[3]^2, 10, 120][[1]] (* Harvey P. Dale, Jan 23 2012 *)
PROG
(PARI) log(3)^2 \\ Charles R Greathouse IV, May 15 2019
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, May 25 2010
STATUS
approved