OFFSET
0,2
LINKS
Michael I. Shamos, A catalog of the real numbers, (2011). See p. 209.
FORMULA
Equals (sinh(1) - sin(1))/2.
EXAMPLE
1/3! + 1/7! + 1/11! + ... = 0.1668651044179524751...
MATHEMATICA
RealDigits[(Sinh[1] - Sin[1])/2, 10, 111] [[1]]
PROG
(PARI) suminf(k=0, 1/(4*k+3)!) \\ Michel Marcus, Apr 25 2020
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Ilya Gutkovskiy, Apr 24 2020
STATUS
approved