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A136137 a(n+1)=sopfr(3a(n)+1), with sopfr=A001414. Finishes with 17 (fixed point). 3
1, 4, 13, 11, 19, 31, 49, 41, 35, 55, 85, 16, 14, 43, 20, 61, 29, 17 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
In the class of recurrence sequences a(n+1)=sopfr(C*a(n)+D), with C=3, D=1.
LINKS
FORMULA
a(n+1)=A001414(3*a(n)+1)
MATHEMATICA
Most[FixedPointList[Total[Times@@@FactorInteger[3#+1]]&, 1]] (* Harvey P. Dale, Dec 19 2022 *)
CROSSREFS
Sequence in context: A173800 A175174 A369412 * A287895 A050223 A301792
KEYWORD
fini,nonn
AUTHOR
Carlos Alves, Dec 16 2007
STATUS
approved

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Last modified July 15 00:37 EDT 2024. Contains 374323 sequences. (Running on oeis4.)