A122790 Decimal expansion of Wagon's constant: the average "dropping time" of the Collatz (3x+1) iteration.

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

Offset: 1

Author

T. D. Noe, Sep 11 2006

Keywords

• cons
• nonn

Crossrefs

Cf. A060445 (dropping time of the 3x+1 iteration starting at 2n+1), A100982, A122791.

Formula

Sum_{k>0} A122437(k+1)*A100982(k)/2^(A020914(k)-1) = 9.47795555655927473691668101258904...