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 A138373 #9 Mar 19 2013 11:44:27 %S A138373 1,3,3,5,6,8,9,10,9,13,13,15,15,18,19,20,22,22,24,25,26,27,29,30,32, %T A138373 33,34,35,36,38,39,40,41,43,44,45,47,47,49,50,52,53,54,55,56,58,57,60, %U A138373 61,62,64,64,67,68,68,71,72,73,74,75,76,78,78,80,82,83,84,85,86,88,88,90 %N A138373 Count of post-period decimal digits up to which the rounded n-th convergent to sqrt(5)/2 agrees with the exact value. %C A138373 Defined equivalent to A138367 considering the constant 1.1188.. = 10*A020837 and its convergents 9/8 (n=1), 19/17 (n=2), 161/144 (n=3), 341/305 (n=4), 2889/2584 (n=5). %Y A138373 Cf. A138335 - A138339, A138343, A138366, A138367, A138369, A138370 - A138374. %K A138373 base,nonn %O A138373 1,2 %A A138373 _Artur Jasinski_, Mar 17 2008 %E A138373 Definition and values replaced as defined via continued fractions - _R. J. Mathar_, Oct 01 2009