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A226611 Irregular array read by rows. a(n) is the smallest starting value of a T_k trajectory that includes A226607(n), where T_k is the 3x+k function associated with A226607(n). 8
1, 1, 3, 23, 123, 171, 1, 1, 3, 1, 19, 99, 147, 163, 123, 283, 159, 319, 1, 9, 1, 5, 7, 1, 1, 3, 1, 3, 2531, 5859, 1, 1, 3, 1, 3, 7, 1, 1, 5, 1, 9, 33, 39, 21, 101, 1, 1, 1, 7, 9, 1, 3, 149, 21, 93, 125, 221, 1, 175, 1, 1, 1, 7, 2585, 1073, 2301, 4121, 893 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

EXAMPLE

The irregular array starts:

(k=1)  1;

(k=5)  1, 3, 23, 123, 171;

(k=7)  1;

(k=11) 1, 3;

a(3)=3 is the smallest starting value for a 3x+5 trajectory that includes A226607(3)=19. The trajectory is {3,7,13,22,11,19,...}.

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 of which A226608(n) is the largest.

Cf. A226627.

Sequence in context: A245752 A290367 A006557 * A081628 A267656 A122883

Adjacent sequences:  A226608 A226609 A226610 * A226612 A226613 A226614

KEYWORD

nonn,tabf

AUTHOR

Geoffrey H. Morley, Jun 13 2013

STATUS

approved

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Last modified March 21 22:19 EDT 2019. Contains 321382 sequences. (Running on oeis4.)