1,1

q > p are "twin simili-primes of order 2" if (p, q) are in A123929 and satisfy q - p = 3. Conjecture : this sequence is infinite.

Amiram Eldar, Table of n, a(n) for n = 1..10000

Cf. A123929, A126699.

Sequence in context: A162562 A182543 A026539 * A076593 A219775 A129774

Adjacent sequences: A126697 A126698 A126699 * A126701 A126702 A126703

nonn

Benoit Cloitre, Feb 11 2007

More terms from Amiram Eldar, Dec 20 2019

approved