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A086648 Decimal expansion of the sum n^(-2n) for n=1 through infinity. 1
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 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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

LINKS

Table of n, a(n) for n=1..105.

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: A197135 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

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Last modified October 18 03:27 EDT 2018. Contains 316302 sequences. (Running on oeis4.)