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A226627 Irregular array read by rows. a(n) is the smallest starting value of a T_k trajectory that includes A226623(n), where T_k is the Collatz-like 3x-k function associated with A226623(n). 8
1, 5, 17, 19, 33, 73, 51, 2263, 2359, 2451, 1671, 2463, 1719, 2367, 4819, 89, 85, 63, 65, 685, 397, 1165, 293, 507, 369, 449, 769, 147, 227, 251, 247, 1085, 777, 7471, 7299, 11811, 5379, 8115, 267, 1355, 1367, 1043, 587, 779, 2123, 827, 2219, 843, 1611, 1707 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

EXAMPLE

The irregular array starts:

(k=1)  1, 5, 17;

(k=11) 19;

(k=17) 33, 73;

(k=19) 51;

a(5)=33 is the smallest starting value for a 3x-17 trajectory that includes A226623(5)=65. The trajectory is {33,41,53,71,98,49,65,...}.

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 of which A226624(n) is the largest.

Cf. A226611.

Sequence in context: A019373 A140568 A019349 * A124873 A129745 A304129

Adjacent sequences:  A226624 A226625 A226626 * A226628 A226629 A226630

KEYWORD

nonn,tabf

AUTHOR

Geoffrey H. Morley, Jun 13 2013

STATUS

approved

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Last modified February 29 09:35 EST 2020. Contains 332355 sequences. (Running on oeis4.)