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 A065008 #6 Jul 08 2024 11:36:02
%S A065008 27,67,104,125,174,201,231,262,295,331,368,407,408,449,492,537,538,
%T A065008 585,634,635,685,686,739,794,795,851,852,911,912,972,973,1035,1036,
%U A065008 1101,1102,1168,1169,1237,1238,1239,1309,1310,1382,1383,1457,1458,1459
%N A065008 Integers for which the periodic part of the continued fraction for the square root of n begins with 5.
%e A065008 The continued fraction for the square root of 104 is 10, {5, 20}.
%t A065008 Select[ Range[1500], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 5 & ]
%Y A065008 Cf. A065005.
%K A065008 easy,nonn
%O A065008 1,1
%A A065008 _Robert G. Wilson v_, Nov 01 2001