

A252801


Primes whose trajectories under the map x > A039951(x) enter the cycle {2, 1093}.


7



2, 5, 7, 13, 17, 23, 29, 31, 37, 41, 43
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OFFSET

1,1


LINKS



EXAMPLE

The trajectory of 31 under the given map starts 31, 7, 5, 2, 1093, 2, 1093, ..., entering the given cycle, so 31 is a term of the sequence.


CROSSREFS



KEYWORD

nonn,hard,more


AUTHOR



EXTENSIONS



STATUS

approved



