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A173672 Positive differences between any two primes without the differences that are semiprimes. 0
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 (list; graph; refs; listen; history; text; internal format)
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.

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

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Last modified March 23 05:36 EDT 2019. Contains 321422 sequences. (Running on oeis4.)