A173672 Positive differences between any two primes without the differences that are semiprimes.

1, 2, 3, 5, 8, 11, 12, 16, 17, 18, 20, 24, 27, 28, 29, 30, 32, 36, 40, 41, 42, 44, 45, 48, 50, 52, 54, 56, 59, 60, 64, 66, 68, 70, 71, 72, 76, 78, 80, 81, 84, 88, 90, 92, 96, 98, 99, 100, 101, 102, 104, 105, 107, 108, 110, 112, 114, 116, 120, 124, 125, 126, 128, 130, 132, 135, 136, 137, 138, 140, 144, 147, 148

Offset

1,2

Links

Table of n, a(n) for n=1..73.

Formula

A030173 \ A001358. [R. J. Mathar, Nov 25 2010]

Crossrefs

Cf. A173656.

Cf. A030173, A001358.

Sequence in context: A028890 A189716 A002480 * A303024 A070223 A298120

Adjacent sequences: A173669 A173670 A173671 * A173673 A173674 A173675

Keyword

nonn

Author

Juri-Stepan Gerasimov, Nov 24 2010

Extensions

Sequence corrected by R. J. Mathar, Nov 25 2010

Status

approved