# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a162696 Showing 1-1 of 1 %I A162696 #7 Jan 14 2023 08:46:07 %S A162696 1,2,1,3,1,2,1,2,4,1,2,1,3,1,2,1,3,1,5,1,2,1,3,1,2,1,2,4,1,2,1,3,1,2, %T A162696 1,2,4,1,2,1,2,3,6,1,2,1,3,1,2,1,2,4,1,2,1,3,1,2,1,3,1,5,1,2,1,3,1,2, %U A162696 1,2,4,1,2,1,3,1,2,1,3,1,5,1,2,1,3,1,2,1,3,1,2,4,1,7,1,2,1,3,1,2,1,2,4,1,2 %N A162696 Trajectory of 1 under morphism taking n to sorted divisors of n+1. %C A162696 1 -> 1,2; 2->1,3; 3->1,2,4; ... %H A162696 Index entries for sequences that are fixed points of mappings %F A162696 a(A117160(k+1)) = k (this is the first occurrence of k in the sequence). - _Rémy Sigrist_, Jan 14 2023 %e A162696 1 -> 1,2 -> 1,2,1,3 -> 1,2,1,3,1,2,1,2,4 -> ... %o A162696 (PARI) v=[1,2];for(i=2,60,v=concat(v,divisors(v[i]+1)));v %Y A162696 Cf. A007001, A001511, A027750, A112682, A117160. %K A162696 nonn %O A162696 1,2 %A A162696 _Franklin T. Adams-Watters_, Jul 10 2009 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE