A164920 Primes which are obtained at least by two ways using the iterations of the Bertrand operator (see A164917) beginning with primes of A164368.

113, 139, 199, 211, 223, 277, 293, 397, 421, 443

Offset: 1

Author

Vladimir Shevelev, Aug 31 2009

Keywords

• nonn
• more
• uned

Comments

The sequence is connected with our sieve selecting the primes of A164368 from all primes.

Examples

			113 is in the sequence since it is obtained either by iterations of Bertrand operator beginning from 17 (17=>31=>61=>113) or by such iterations beginning with 59 (59=>113), and both of primes 17 and 59 are in A164368.
		

Links

• V. Shevelev, On critical small intervals containing primes, arXiv:0908.2319 [math.NT], 2009.

Crossrefs

Cf. A006992, A164917, A164918, A104272, A164368, A164288.