A372393 - OEIS

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

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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