A163164 Positions n such that A163163(n) is not prime.

1, 4, 6, 10, 12, 14, 16, 18, 20, 21, 22, 24, 25, 26, 28, 30, 34, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 64, 66, 68, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 85, 86, 88, 90, 91, 92, 93, 94, 96, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115

Offset: 1

Author

Juri-Stepan Gerasimov, Jul 22 2009

Keywords

• nonn
• easy

Examples

			a(1)=1 because A163163(1)=1 is not prime. a(2)=4 because A163163(4)=6 is not prime.
		

Crossrefs

Cf. A000005, A000203, A007503, A163163.

Extensions

33 removed by R. J. Mathar, Jul 25 2009