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A372393
Decimal expansion of Sum_{k>=0} (-1)^k / (k! + k).
1
6, 6, 7, 8, 0, 4, 7, 4, 1, 0, 2, 5, 9, 8, 2, 0, 7, 2, 9, 1, 7, 5, 2, 7, 1, 2, 0, 2, 2, 9, 2, 4, 0, 7, 3, 6, 1, 1, 1, 8, 5, 8, 6, 0, 3, 4, 3, 0, 8, 5, 8, 9, 4, 1, 9, 8, 4, 3, 9, 3, 9, 1, 7, 0, 7, 0, 5, 1, 6, 2, 7, 8, 4, 6, 7, 3, 9, 9, 8, 1, 1, 8, 9, 8, 1, 3
OFFSET
0,1
EXAMPLE
0.667804741025982072917527120229240736111858603430...
MATHEMATICA
s = Sum[(-1)^k/(k! + k), {k, 0, 100}];
d = N[s, 100]
First[RealDigits[d]]
PROG
(PARI) suminf(k=0, (-1)^k/(k!+k)) \\ Michel Marcus, Jun 01 2024
CROSSREFS
Cf. A372392.
Sequence in context: A195103 A345685 A152485 * A256684 A049005 A279005
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, May 31 2024
STATUS
approved