A252801 Primes whose trajectories under the map x -> A039951(x) enter the cycle {2, 1093}.

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

Offset

1,1

Links

Table of n, a(n) for n=1..11.

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

Cf. A039951, A244550, A252802, A252812.

Sequence in context: A291284 A023204 A248606 * A270617 A045352 A278494

Adjacent sequences: A252798 A252799 A252800 * A252802 A252803 A252804

Keyword

nonn,hard,more

Author

Felix Fröhlich, Dec 22 2014

Extensions

Name edited by Felix Fröhlich, Jun 19 2021

Status

approved