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%I #4 Oct 15 2013 22:31:40
%S 1,2,4,6,30,14,462,30,924,62,360,126,88623545610600,254,5364840,510,
%T 214057116,1022,473045752778491241949600,2046,
%U 3968969477588889464597306400,4094,16579321550270765937400453704000
%N LCM of terms in periodic part of continued fraction expansion of square root of -1+2^n.
%t Table[Apply[LCM, Last[ContinuedFraction[Sqrt[ -1+2^u]]]], {u, 1, 25}]
%Y Cf. A077624-A077635.
%K nonn
%O 1,2
%A _Labos Elemer_, Nov 13 2002