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 A252802 Primes whose trajectory under the map x -> A039951(x) enters the cycle {3, 11, 71}. 7
 3, 11, 19 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS From Felix Fröhlich, Jul 01 2021: (Start) Further terms in the sequence are 71, 107, 127, 139, 167, 179, etc. The smallest prime where it is unknown whether it is in this sequence (or in A252801 or A252812) is 47. Is A000040 the union of this sequence, A252801 and A252812? (End) LINKS Table of n, a(n) for n=1..3. EXAMPLE The trajectory of 19 under the given map starts 19, 3, 11, 71, 3, ..., entering the given cycle, so 19 is a term of the sequence. CROSSREFS Cf. A000040, A039951, A244550, A252801, A252812. Sequence in context: A228470 A246453 A117769 * A030377 A092060 A071916 Adjacent sequences: A252799 A252800 A252801 * A252803 A252804 A252805 KEYWORD nonn,hard,more,bref AUTHOR Felix Fröhlich, Dec 22 2014 EXTENSIONS Name edited by Felix Fröhlich, Jun 19 2021 STATUS approved

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Last modified December 7 15:42 EST 2023. Contains 367658 sequences. (Running on oeis4.)