A163116 Partial sums of A161671.

2, 4, 5, 6, 9, 13, 20, 27, 36, 50, 65, 84, 105, 127, 152, 181, 215, 250, 290, 333, 376, 423, 473, 528, 590, 655, 720, 788, 857, 928, 1011, 1097, 1188, 1279, 1379, 1480, 1586, 1697, 1810, 1928, 2051, 2175, 2308, 2441, 2576, 2712

Offset: 1

Author

Juri-Stepan Gerasimov, Jul 21 2009

Keywords

• nonn

Comments

The n-th partial sum of the primes minus the n-th partial sum of the nonprimes.

Examples

			a(1) = A161671(1) = 2.
a(2) = a(1) + A161671(2) = 2 + 2 = 4.
a(3) = a(2) + A161671(3) = 4 + 1 = 5.
		

Crossrefs

Cf. A000040, A141468, A161671.

Formula

a(n) = A007504(n) - A051349(n-1). - R. J. Mathar, Jul 31 2009

Extensions

Corrected from a(9) on by R. J. Mathar, Jul 31 2009