A081385 Incorrect version of A006254 (or A111333).

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17, 18, 19, 20, 26, 27, 28, 29, 30, 36, 37, 38, 39, 40, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65

Offset: 1

Author

Michael Joseph Halm, Apr 20 2003

Keywords

• dead

Comments

Name was: Numbers just more than half-prime.

Examples

			a(11) = 16 because [(31)/2 + 1/2]=16.
		

References

• M. J. Halm, More Sequences, Mpossibilities 83, 2003.

Links

• M. J. Halm, Sequences

Crossrefs

Cf. A000040.

Programs

PARI

a(n) = ceil(prime(n)/2); \\ Michel Marcus, Aug 13 2013

Formula

a(n) = [p(n)/2 + 1/2].