A357145 Decimal expansion of Sum_{n>=1} 1/A003422(n).

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

Offset

1,2

Links

Table of n, a(n) for n=1..106.

Example

1.887242872139005495...

Prog

(PARI) sumpos(m=1, 1/sum(k=0, m-1, k!)) \\ Michel Marcus, Sep 15 2022
(PARI) f=t=1.; 1+suminf(m=1, f*=m; t+=f; 1/t) \\ Charles R Greathouse IV, Sep 15 2022

Crossrefs

Cf. A001113, A003422.

Sequence in context: A242051 A263030 A217171 * A197381 A195454 A154400

Adjacent sequences: A357142 A357143 A357144 * A357146 A357147 A357148

Keyword

nonn,cons

Author

Hafiz A. Aziz, Sep 15 2022

Extensions

More digits from Alois P. Heinz, Sep 15 2022

Status

approved