A098421 Primes occurring in exactly one prime triple (p,q,r) with p

5, 23, 37, 47, 67, 71, 73, 97, 113, 191, 199, 223, 233, 277, 281, 283, 307, 317, 347, 349, 353, 457, 467, 613, 617, 619, 641, 643, 647, 821, 829, 853, 863, 877, 887, 1087, 1097, 1277, 1279, 1283, 1297, 1307, 1423, 1433, 1447, 1451, 1453, 1481, 1493, 1607, 1609

Offset: 1

Author

Reinhard Zumkeller, Sep 07 2004

Keywords

• nonn

Comments

A098418(a(n)) = 1; subsequence of A098420.

Links

• Eric Weisstein's World of Mathematics, Prime Triplet

Crossrefs

Cf. A098419, A098422, A098423.