1,1

These are non-twin primes sandwiched between at least 2 pairs of twins on each side. The first number in the sequence is 1039 (sandwiched between 1019,1021,1031,1033 and 1049,1051,1061,1063).

Cf. A007510, A069453.

Sequence in context: A065572 A074673 A020395 this_sequence A031129 A045027 A023067

Adjacent sequences: A069453 A069454 A069455 this_sequence A069457 A069458 A069459

nonn

N. Fernandez (primeness(AT)borve.org), Mar 23 2002