A286370 a(n) = A286369(A139391(n)).

2, 2, 7, 2, 2, 4, 4, 2, 5, 7, 6, 4, 7, 5, 5, 2, 7, 14, 7, 7, 2, 4, 10, 4, 4, 7, 6, 5, 4, 11, 5, 2, 20, 6, 7, 14, 5, 4, 4, 7, 5, 33, 42, 4, 6, 5, 5, 4, 7, 20, 33, 7, 7, 58, 4, 5, 4, 7, 6, 11, 5, 5, 11, 2, 14, 32, 7, 6, 7, 10, 4, 14, 11, 7, 6, 4, 7, 11, 11, 7, 7, 6, 73, 33, 2, 4, 4, 4, 4, 25, 6, 5, 10, 5, 11, 4, 6, 14, 7, 20, 4, 10, 10, 7, 5, 7, 32, 58, 6, 11

Offset: 1

Author

Antti Karttunen, May 09 2017

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10000
• Indranil Ghosh, Python program to generate the sequence
• Index entries for sequences related to 3x+1 (or Collatz) problem

Crossrefs

Cf. A139391, A286369, A286371.

Programs

Scheme

(define (A286370 n) (A286369 (A139391 n)))

Formula

a(n) = A286369(A139391(n)).