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 A065012 #6 Jul 08 2024 11:35:44
%S A065012 83,199,328,365,534,581,735,790,847,1031,1096,1163,1304,1377,1452,
%T A065012 1529,1690,1773,1858,1945,2035,2126,2219,2314,2411,2511,2612,2715,
%U A065012 2820,2927,2928,3037,3148,3261,3376,3493,3494,3613,3734,3857,3982,3983,4109,4110
%N A065012 Integers for which the periodic part of the continued fraction for the square root of n begins with 9.
%e A065012 The continued fraction for the square root of 83 is 9, {9, 18}.
%t A065012 Select[ Range[5000], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 9 & ]
%Y A065012 Cf. A065005.
%K A065012 easy,nonn
%O A065012 1,1
%A A065012 _Robert G. Wilson v_, Nov 01 2001