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A164920 Primes which are obtained at least by two ways using the iterations of the Bertrand operator (see A164917) beginning with primes of A164368. 1
113, 139, 199, 211, 223, 277, 293, 397, 421, 443 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..10.

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

EXAMPLE

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.

CROSSREFS

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

Sequence in context: A198319 A124584 A074979 * A102833 A136078 A230255

Adjacent sequences:  A164917 A164918 A164919 * A164921 A164922 A164923

KEYWORD

nonn,more,uned

AUTHOR

Vladimir Shevelev, Aug 31 2009

STATUS

approved

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Last modified April 6 21:24 EDT 2020. Contains 333286 sequences. (Running on oeis4.)