A343157 Trajectory of 407 under the map x -> A084317(x).

407, 1137, 3379, 31109, 132393, 344131, 1731653, 71143523, 115771019, 7133141039, 18152375353, 723112747673, 1938058565667, 372411163329269, 646991575604859, 3500960117162747, 19920988418382133, 479222853318661919, 3877130279948783893, 71942196909541476259, 7170749184914732550379

Offset

0,1

Comments

It is not known if any a(n) is a prime (see discussion in A343156). - N. J. A. Sloane, Apr 07 2021

References

Eric Angelini, W. Edwin Clark, Hans Havermann, Frank Stevenson, Allan C. Wechsler, and others, Postings to Math Fun mailing list, April 2021.

Links

Jinyuan Wang, Table of n, a(n) for n = 0..91 (terms 0..84 from Hans Havermann)

Crossrefs

Cf. A056938, A084317, A343156.

Sequence in context: A063138 A118327 A213606 * A063145 A281859 A067674

Adjacent sequences: A343154 A343155 A343156 * A343158 A343159 A343160

Keyword

nonn,base

Author

Hans Havermann, Apr 07 2021

Status

approved