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 A215753 #31 Jul 09 2024 12:46:53
%S A215753 1,2,21,44,109,153,2098,2251,17855,323641,665137,1653915,2319052,
%T A215753 6292019,21195109,91072455,112267564,203340019,2959027830,6121395679,
%U A215753 272300437706,278421833385,1107565937861,1385987771246,20511394735305,42408777241856,105328949219017,147737726460873
%N A215753 Denominators of the continued fraction convergents of log_10(3).
%C A215753 3^a(n) gets increasingly close to 10^(numerator of convergent).
%t A215753 Denominator[Convergents[Log[10,3],30]] (* _Harvey P. Dale_, Jan 24 2015 *)
%o A215753 (PARI) {my(cf=contfrac(log(3)/log(10))); vector(#cf, i, contfracpnqn( cf[1..i])[2, 1])}
%Y A215753 Numerators are in A215757.
%Y A215753 Cf. A114490, A215749.
%Y A215753 Cf. A046104, A073733.
%K A215753 nonn,frac
%O A215753 0,2
%A A215753 _V. Raman_, Aug 23 2012