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%I #41 Dec 12 2022 08:31:24
%S 407,1137,3379,31109,132393,344131,1731653,71143523,115771019,
%T 7133141039,18152375353,723112747673,1938058565667,372411163329269,
%U 646991575604859,3500960117162747,19920988418382133,479222853318661919,3877130279948783893,71942196909541476259,7170749184914732550379
%N Trajectory of 407 under the map x -> A084317(x).
%C It is not known if any a(n) is a prime (see discussion in A343156). - _N. J. A. Sloane_, Apr 07 2021
%D Eric Angelini, W. Edwin Clark, Hans Havermann, Frank Stevenson, Allan C. Wechsler, and others, Postings to Math Fun mailing list, April 2021.
%H Jinyuan Wang, <a href="/A343157/b343157.txt">Table of n, a(n) for n = 0..91</a> (terms 0..84 from Hans Havermann)
%Y Cf. A056938, A084317, A343156.
%K nonn,base
%O 0,1
%A _Hans Havermann_, Apr 07 2021