A168045 a(n) = A167707(n) + n.

1, 3, 6, 9, 12, 14, 16, 18, 20, 23, 25, 27, 29, 31, 34, 36, 38, 40, 43, 45, 47, 49, 51, 53, 56, 58, 60, 62, 64, 66, 69, 71, 73, 75, 78, 80, 82, 84, 87, 89, 91, 93, 95, 98, 100, 102, 104, 106, 108, 111, 113, 115, 117, 119, 121, 124, 126, 128, 130, 133, 135, 137, 139, 141

Offset: 1

Author

Juri-Stepan Gerasimov, Nov 17 2009

Keywords

• nonn
• less

Crossrefs

Cf. A167707.

Formula

a(n) = 2n + n / log n + O(n / (log n)^2). - Charles R Greathouse IV, May 25 2011