This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A077632 #4 Oct 15 2013 22:31:40
%S A077632 2,4,3,8,10,16,66,32,220,64,235620,128,360360,256,2508660,512,
%T A077632 16290726273360,1024,23508390120198798054240,2048,
%U A077632 465977246353354335600,4096,3026207803243202829468977760,8192
%N A077632 LCM of terms in periodic part of continued fraction expansion of square root of 1+2^n.
%t A077632 Table[Apply[LCM, Last[ContinuedFraction[Sqrt[1+2^u]]]], {u, 1, 25}]
%Y A077632 Cf. A077624-A077635.
%K A077632 nonn
%O A077632 1,1
%A A077632 _Labos Elemer_, Nov 13 2002