A226608 Irregular array read by rows. a(n) is the largest element in the primitive Collatz-like 3x+k cycle associated with A226607(n).

1, 1, 49, 37, 2773, 3397, 11, 7, 79, 1, 1853, 1121, 797, 665, 905, 653, 761, 557, 5, 181, 35, 19, 11, 1651, 137, 41, 1, 121, 2277097, 1051393, 131, 127, 79, 89, 53, 65, 157, 23, 43, 643, 331, 223, 211, 259, 175, 1409, 757, 71, 19, 827, 139, 1399, 775, 751, 967, 559, 571

Offset

1,3

Links

Geoffrey H. Morley, Rows 1..2032 of array, flattened

Example

The irregular array starts:
(k=1)  1;
(k=5)  1, 49, 37, 2772, 3397;
(k=7)  11;
(k=11) 7, 79;
a(3)=49 is the largest element in the 3x+5 cycle {19,31,49,76,38} associated with A226607(3)=19.

Crossrefs

Row n begins with a(A226612(n)) and has length A226613(n).

The cycle associated with a(n) has length A226609(n) and A226610(n) odd elements.

Cf. A226611, A226624, A226667-A226669.

Sequence in context: A033369 A236247 A299470 * A027647 A221202 A291480

Adjacent sequences: A226605 A226606 A226607 * A226609 A226610 A226611

Keyword

nonn,tabf

Author

Geoffrey H. Morley, Jun 13 2013

Status

approved