OFFSET
0,1
FORMULA
Equals 2*(A143623 - 1).
EXAMPLE
0.7635465813520724481068778581465512067097...
MAPLE
hypergeom([1], [1/2, 2], -1/4) ; evalf(%) ; # R. J. Mathar, Jul 03 2024
MATHEMATICA
s = N[Sum[(-1)^k/((k + 1) (2 k)!), {k, 0, Infinity}], 120]
First[RealDigits[s]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Apr 24 2024
STATUS
approved