A226624 Irregular array read by rows. a(n) is the largest element in the primitive Collatz-like 3x-k cycle associated with A226623(n).

1, 7, 91, 29, 179, 143, 505, 17033, 16793, 15497, 31613, 19589, 25781, 15845, 12137, 2011, 311, 517, 103, 19031, 24623, 8339, 811, 2609, 7387, 2995, 18275, 601, 493, 421, 1577, 74611, 13699, 1793597, 275693, 177521, 226769, 144881

Offset

1,2

Links

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

Example

The irregular array starts:
(k=1)  1, 7, 91;
(k=11) 29;
(k=17) 179, 143;
(k=19) 505;
a(4)=29 is the largest element 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 A226626(n) odd elements.

Cf. A226608, A226627, A226683, A226684, A226685.

Sequence in context: A243699 A007820 A306137 * A266236 A123694 A319978

Adjacent sequences: A226621 A226622 A226623 * A226625 A226626 A226627

Keyword

nonn,tabf

Author

Geoffrey H. Morley, Jun 13 2013

Status

approved