A086648 Decimal expansion of the sum n^(-2n) for n=1 through infinity.

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

Offset

1,3

Comments

This number is the sum of the inverses of the terms in the sequence A062206.

Links

Alois P. Heinz, Table of n, a(n) for n = 1..10000

Example

1.063887103762417011746491117660011115727199076891599286634083869667...

Prog

(PARI) suminf(k=1, 1./k^(2*k)) \\ Franklin T. Adams-Watters, Mar 23 2010

Crossrefs

Cf. A062206, A073009.

Sequence in context: A365522 A088246 A179559 * A268893 A199447 A273067

Adjacent sequences: A086645 A086646 A086647 * A086649 A086650 A086651

Keyword

cons,easy,nonn

Author

Christopher M. Tomaszewski (cmt1288(AT)comcast.net), Jul 26 2003

Extensions

Clarified definition - R. J. Mathar, Feb 06 2009

More terms from Franklin T. Adams-Watters, Mar 23 2010

Status

approved