A116024 The n-th prime minus n gives a semiprime (A001358).

5, 7, 9, 12, 20, 22, 24, 36, 40, 49, 52, 55, 58, 59, 60, 64, 69, 72, 74, 78, 80, 82, 87, 93, 96, 101, 105, 106, 108, 112, 114, 117, 118, 122, 123, 124, 125, 128, 132, 134, 135, 136, 138, 140, 142, 147, 150, 156, 158, 159, 160, 162, 164, 166, 170, 172, 180, 184

Offset: 1

Author

Giovanni Resta, Feb 13 2006

Keywords

• nonn

Examples

			p(40)-40=133=7*19.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A001358, A116013, A116023.

Programs

Mathematica

Transpose[Select[Table[{Prime[n],n},{n,200}],PrimeOmega[#[[1]]-#[[2]]] == 2&]][[2]] (* Harvey P. Dale, Jun 05 2015 *)