A372393 Decimal expansion of Sum_{k>=0} (-1)^k / (k! + k).

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

Links

Table of n, a(n) for n=0..85.

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

Adjacent sequences: A372390 A372391 A372392 * A372394 A372395 A372396

Keyword

nonn,cons

Author

Clark Kimberling, May 31 2024

Status

approved