OFFSET
0,1
FORMULA
Equals 1/A206533. - Hugo Pfoertner, Apr 26 2024
EXAMPLE
0.459697694131860282599063392557023396267689579382077772...
MATHEMATICA
s = N[Sum[(-1)^k/(2(k + 1) (2 k + 1)!), {k, 0, Infinity}], 120]
First[RealDigits[s]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Apr 24 2024
STATUS
approved