A047747 A discrete analog of Li(n): round ( Sum_{k=2..n} 1/log_10 (k) ).

3, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 19, 20, 21, 22, 23, 23, 24, 25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 32, 33, 34, 34, 35, 36, 36, 37, 37, 38, 39, 39, 40, 40, 41, 42, 42, 43, 43, 44, 45, 45, 46, 46, 47, 47, 48, 49, 49, 50, 50, 51

Offset

2,1

Links

Table of n, a(n) for n=2..65.

Mathematica

Round[Accumulate[1/Log10[Range[2, 70]]]] (* Harvey P. Dale, Aug 08 2019 *)

Crossrefs

Sequence in context: A007731 A306590 A249494 * A007957 A194377 A389736

Adjacent sequences: A047744 A047745 A047746 * A047748 A047749 A047750

Keyword

nonn

Author

N. J. A. Sloane

Status

approved