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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
OFFSET
1,1
COMMENTS
A139436(a(n)) = 1.
Conjecture: the sequence is finite and a(13)=41 is the largest term.
CROSSREFS
Sequence in context: A283965 A193599 A068125 * A233746 A299233 A320997
KEYWORD
nonn,fini,full
AUTHOR
Reinhard Zumkeller, Apr 21 2008
STATUS
approved