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

Author

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

Keywords

• cons
• easy
• nonn

Comments

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

Examples

			1.063887103762417011746491117660011115727199076891599286634083869667...
		

Links

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

Crossrefs

Cf. A062206, A073009.

Programs

PARI

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

Extensions

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

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