A102284 Length of primitive cycle mentioned in A102280.

2, 3, 4, 6, 4, 7, 11, 5, 16, 5, 23, 8, 6, 20, 11, 18, 38, 29, 12, 28, 6, 24, 30, 10, 12, 38, 44, 24, 100, 17, 48, 72, 18, 14, 21, 106, 52, 29, 27, 75, 44, 7, 37, 26, 36, 14, 136, 140, 10, 59, 72, 42, 28, 15, 89, 47, 24, 34, 24, 110, 80, 72, 26, 46, 66, 141, 15, 10, 80, 68, 88, 38, 51, 20, 47, 66, 16, 107, 25, 58

Offset: 1

Author

N. J. A. Sloane, Feb 19 2005

Keywords

• nonn

Links

• Geoffrey H. Morley, Table of n, a(n) for n = 1..10000
• J. C. Lagarias, The set of rational cycles for the 3x+1 problem, Acta Arith. 56 (1990), 33-53. - See Table 3.1 on page 41. But there are errors - a(12)[k=35] and a(25)[k=73] are incorrect.

Crossrefs

Cf. A102280, A226634.

Extensions

a(12) and a(25) corrected and more terms added by Geoffrey H. Morley, Mar 14 2013