A347265 Positive integers in the order of their first appearance in the 3x+1 sequences.

1, 4, 2, 3, 10, 5, 16, 8, 6, 7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 9, 28, 14, 12, 15, 46, 23, 70, 35, 106, 53, 160, 80, 18, 19, 58, 29, 88, 44, 21, 64, 32, 24, 25, 76, 38, 27, 82, 41, 124, 62, 31, 94, 47, 142, 71, 214, 107, 322, 161, 484, 242, 121, 364, 182

Offset: 0

Author

Omar E. Pol, Aug 27 2021

Keywords

• nonn

Comments

The positive integers in the order of their first appearance in the rows of the square array A347270.

The first 8 terms of A263716 appear here in a different order.

Links

• Index entries for sequences related to 3x+1 (or Collatz) problem

Crossrefs

Cf. A000027, A006370, A347270. Another version of A263716.

Formula

a(n) = A263716(n), n >= 8.