A137197 Decimal expansion of the sum of the reciprocals of the elements of A007908.

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

Offset

1,3

Links

Table of n, a(n) for n=1..101.

Example

1 + 1/12 + 1/123 + 1/1234 + 1/12345 + 1/123456 + .....= 1.0923637910951227888013796063072721016963921894258793349801635199721622546190953748287037568512919456

Maple

> readlib(log10); P:=proc(n) local a, i, j, k; a:=1; k:=2; j:=1; for i from 1 by 1 to n do j:=j*10^(trunc(evalf(log10(k)))+1)+k; a:=a+1/j; k:=k+1; lprint(evalf(a, 101)); od; end: P(1000);

Crossrefs

Cf. A007908.

Sequence in context: A160108 A011344 A257959 * A340826 A144981 A215267

Adjacent sequences: A137194 A137195 A137196 * A137198 A137199 A137200

Keyword

easy,nonn,cons

Author

Paolo P. Lava and Giorgio Balzarotti, Mar 04 2008

Status

approved