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A087971
Maximal term in Collatz-iteration started at 3^n-1.
1
2, 8, 40, 80, 9232, 9232, 3280, 6560, 29524, 59048, 1276936, 1276936, 6810136, 6810136, 21523360, 43046720, 1570824736, 1570824736, 1743392200, 3486784400, 17651846032, 31381059608, 141214768240, 282429536480, 9161049517720
OFFSET
1,1
LINKS
FORMULA
a(n) = A025586(3^n-1).
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Sep 24 2003
STATUS
approved