A047740 A discrete analog of Li(n): floor ( Sum_{k=2..n} 1/log_e (k) ).

1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23

Offset

2,2

Links

Table of n, a(n) for n=2..70.

Crossrefs

Sequence in context: A073188 A269225 A217713 * A137687 A024745 A322921

Adjacent sequences: A047737 A047738 A047739 * A047741 A047742 A047743

Keyword

nonn

Author

N. J. A. Sloane

Status

approved