A087971 - OEIS

%I #8 Jun 04 2024 01:26:33

%S 2,8,40,80,9232,9232,3280,6560,29524,59048,1276936,1276936,6810136,

%T 6810136,21523360,43046720,1570824736,1570824736,1743392200,

%U 3486784400,17651846032,31381059608,141214768240,282429536480,9161049517720

%N Maximal term in Collatz-iteration started at 3^n-1.

%H Amiram Eldar, <a href="/A087971/b087971.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) = A025586(3^n-1).

%Y Cf. A025586, A087701, A087972.

%K nonn

%O 1,1

%A _Labos Elemer_, Sep 24 2003