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 A077636 #26 Sep 26 2021 18:47:31
%S A077636 0,1,2,2,4,2,2,2,4,8,18,14,36,38,232,268,110,280,4348,3244,32684,
%T A077636 148184,207616,9988,1946132,2154482,13319736,8971624,12345748,
%U A077636 69705504,159413696,1184191340,1183672188,23656693528,28963250020,701296434876,754283490078
%N A077636 Length of periodic part of continued fraction expansion of square root of A051451(n), i.e., sqrt(lcm(1..x)) where x is a prime power from A000961.
%F A077636 a(n) = A003285(A051451(n)). - _Michel Marcus_, Sep 30 2019
%e A077636 For A051451(10) = 360360, the periodic part is {3,2,1,132,1,2,3,1200} with 8 terms, so a(10) = 8.
%t A077636 pp = Join[{1}, Select[Range[2, 50], Mod[ #, # - EulerPhi[ # ]] == 0 &]]; Table[ Length[ Last[ ContinuedFraction[ Sqrt[ Apply[ LCM, Table[i, {i, 1, pp[[n]]}]]]]]], {n, 1, 31}]
%Y A077636 Cf. A000961, A003285, A051451.
%K A077636 nonn,more
%O A077636 1,3
%A A077636 _Labos Elemer_, Nov 13 2002
%E A077636 Edited and extended by _Robert G. Wilson v_, Nov 14 2002
%E A077636 a(31) from _Ray Chandler_, Jan 16 2009
%E A077636 a(32)-a(35) from _Chai Wah Wu_, Sep 26 2019
%E A077636 a(36) from _Chai Wah Wu_, Sep 29 2019
%E A077636 a(37) from _Chai Wah Wu_, Sep 26 2021