A134878 Decimal expansion of Sum_{k>=1} 1/(k^2)^(k^2).

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

Offset: 1

Author

Artur Jasinski, Nov 14 2007

Keywords

• nonn
• cons

Comments

Sum_{k>=1} 1/(k^2)^(k^2) = 1.003906252581174791767407290614306741076124924379285...

Crossrefs

Cf. A073009, A100085, A134877.

Programs

Mathematica

RealDigits[N[Sum[1/(n^2)^(n^2), {n, 1, 30}], 200]][[1]]

Formula

Equals Sum_{n>=1} 1/A008972(n). - R. J. Mathar, Jul 31 2025