A069458 Twin pack primes.

3, 5, 7, 11, 13, 17, 19, 101, 103, 107, 109, 137, 139, 149, 151, 179, 181, 191, 193, 197, 199, 419, 421, 431, 433, 809, 811, 821, 823, 827, 829, 1019, 1021, 1031, 1033, 1049, 1051, 1061, 1063, 1481, 1483, 1487, 1489, 1871, 1873, 1877

Offset: 1

Author

Neil Fernandez, Mar 23 2002

Keywords

• nonn

Examples

			A twin pack of primes contains 2 or more pairs of twin primes, between which pairs there are no other primes. 137,139,149,151 are in the sequence because they are consecutive primes which belong to more than 1 twin pair. 29,31 are not because both the preceding prime 23 and the next prime 37 are non-twins.
		

Crossrefs

Cf. A001097, A069457.

Programs

Mathematica

Join[{3},Flatten[Select[Partition[Prime[Range[300]],4,1],#[[2]]-#[[1]] == #[[4]]-#[[3]] == 2&]]// Union] (* Harvey P. Dale, Jan 13 2017 *)