A226626 Irregular array read by rows. a(n) is the number of odd elements in the primitive Collatz-like 3x-k cycle associated with A226623(n).

1, 2, 7, 3, 4, 4, 11, 12, 12, 12, 12, 12, 12, 12, 12, 22, 8, 6, 4, 14, 14, 14, 8, 11, 11, 11, 44, 5, 5, 5, 12, 28, 14, 24, 24, 24, 24, 24, 14, 14, 21, 21, 14, 7, 7, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 32, 8

Offset

1,2

Links

Geoffrey H. Morley, Rows 1..280 of array, flattened

Example

The irregular array starts:
(k=1)  1, 2, 7;
(k=11) 3;
(k=17) 4, 4;
(k=19) 11;
a(4)=3 is the number of odd elements in the 3x-11 cycle {19,23,29,38} associated with A226623(4)=19

Crossrefs

Row n begins with a(A226628(n)) and has length A226629(n). k=A226630(n).

The cycle associated with a(n) has length A226625(n) and its largest element is A226624(n).

Cf. A226610, A226627, A226632, A226689.

Sequence in context: A088538 A210516 A257102 * A249778 A350505 A326661

Adjacent sequences: A226623 A226624 A226625 * A226627 A226628 A226629

Keyword

nonn,tabf

Author

Geoffrey H. Morley, Jun 13 2013

Status

approved