A047744 A discrete analog of Li(n): round ( Sum_{k=2..n} 1/log_2 (k) ).

1, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17

Offset

2,2

Links

Table of n, a(n) for n=2..74.

Crossrefs

Sequence in context: A060646 A103298 A082429 * A163563 A189667 A196390

Adjacent sequences: A047741 A047742 A047743 * A047745 A047746 A047747

Keyword

nonn

Author

N. J. A. Sloane

Status

approved