A286193 Decimal expansion of Sum_{n>=1} 1/(n^n+n).

7, 0, 4, 1, 8, 8, 3, 4, 9, 9, 2, 3, 3, 1, 4, 7, 1, 8, 1, 7, 1, 2, 6, 2, 0, 0, 0, 4, 4, 2, 2, 1, 8, 5, 7, 8, 0, 3, 0, 4, 1, 5, 8, 5, 3, 7, 7, 2, 9, 0, 9, 4, 4, 5, 0, 7, 4, 2, 2, 2, 3, 4, 0, 3, 8, 6, 1, 3, 9, 0, 6, 9, 3, 8, 2, 4, 0, 7, 7, 6, 1, 5, 5, 9, 0, 4, 5, 6, 8, 5, 6, 2, 3, 5, 3, 0, 5, 6

Offset

0,1

Links

Table of n, a(n) for n=0..97.

Example

0.70418834992331471817126200044221857803...

Mathematica

RealDigits[N[Sum[1/(n^n+n), {n, 1, Infinity}], 20]][[1]]

Prog

(Python) from decimal import *; getcontext().prec=300; print sum([Decimal(1)/Decimal(n**n+n)for n in range(1, 200)])
(PARI) suminf(n=1, 1/(n^n+n)) \\ Michel Marcus, May 04 2017

Crossrefs

Cf. A073009, A134883.

Sequence in context: A020830 A200122 A245637 * A021146 A201424 A070513

Adjacent sequences: A286190 A286191 A286192 * A286194 A286195 A286196

Keyword

nonn,cons

Author

Jonathan Frech, May 04 2017

Status

approved