%I #4 Oct 15 2013 22:31:40
%S 2,6,30,18,90,54,106260,162,26040,486,341725784400,1458,
%T 6564164506066423389173040,4374,177815552218920,13122,
%U 2998833665484118393000638135815684490471025925316000,39366
%N LCM of terms in periodic part of continued fraction expansion of square root of 1+3^n.
%t Table[Apply[LCM, Last[ContinuedFraction[Sqrt[1+3^u]]]], {u, 1, 25}]
%Y Cf. A077624-A077635.
%K nonn
%O 1,1
%A _Labos Elemer_, Nov 13 2002