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 A073824 #24 Mar 29 2025 19:56:39 %S A073824 8,0,4,3,1,8,5,6,1,1,1,7,1,5,7,9,5,0,7,6,7,6,8,0,4,4,1,3,9,3,4,1,9,2, %T A073824 9,9,0,5,7,3,2,7,2,7,3,9,6,4,1,9,6,8,5,2,8,5,5,9,9,2,7,3,5,9,5,1,9,1, %U A073824 4,5,4,5,5,3,1,0,2,2,7,8,0,8,2,1,3,4,5,3,2,4,9,3,1,1,2,0,2,0,4,4,9,3,3,9 %N A073824 Decimal expansion of number with continued fraction expansion 0, 1, 4, 9, ... (the squares). %H A073824 Kerry Mitchell, <a href="/A073824/b073824.txt">Table of n, a(n) for n = 0..1494</a> %e A073824 0.80431856111715795076768044139... %t A073824 RealDigits[FromContinuedFraction[Range[0,100]^2],10,120][[1]] (* _Harvey P. Dale_, May 07 2018 *) %o A073824 (PARI) dec_exp(v)= w=contfracpnqn(v); w[1,1]/w[2,1]+0. %o A073824 dec_exp(vector(2000,i,(i-1)^2)) %Y A073824 Cf. A000290 (squares), A052119, A309930, A214070. %Y A073824 The numerators and denominators of convergents to this constant are given by A036245 and A036246 respectively. %K A073824 cons,nonn %O A073824 0,1 %A A073824 _Rick L. Shepherd_, Aug 12 2002