A156543 Multiplicative closure of primes that are not Sophie Germain primes (A053176).

1, 7, 13, 17, 19, 31, 37, 43, 47, 49, 59, 61, 67, 71, 73, 79, 91, 97, 101, 103, 107, 109, 119, 127, 133, 137, 139, 149, 151, 157, 163, 167, 169, 181, 193, 197, 199, 211, 217, 221, 223, 227, 229, 241, 247, 257, 259, 263, 269, 271, 277, 283, 289, 301, 307, 311

Offset: 1

Author

Reinhard Zumkeller, Feb 09 2009

Keywords

• nonn

Comments

a(n) mod 6 = 1 or = 5; subsequence of A007310;

A156542(a(n)) = 0;

A045979 is a subsequence.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A007310, A045979, A053176, A156541, A156542.