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A139437 Numbers having exactly one partition into initial terms of a Collatz trajectory starting with a value less than n. 1
3, 5, 6, 8, 10, 11, 16, 17, 20, 23, 25, 32, 41 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A139436(a(n)) = 1.

Conjecture: the sequence is finite and a(13)=41 is the largest term.

LINKS

Table of n, a(n) for n=1..13.

CROSSREFS

Sequence in context: A283965 A193599 A068125 * A233746 A299233 A320997

Adjacent sequences:  A139434 A139435 A139436 * A139438 A139439 A139440

KEYWORD

nonn,fini,full

AUTHOR

Reinhard Zumkeller, Apr 21 2008

STATUS

approved

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Last modified January 25 22:56 EST 2020. Contains 331270 sequences. (Running on oeis4.)