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 A215759 #20 Jul 09 2024 12:45:56
%S A215759 0,1,5,11,60,371,431,2074774,2075205,4149979,10375163,24900305,
%T A215759 60175773,85076078,145251851,230327929,1527219425,7866425054,
%U A215759 9393644479,787538916811,5522166062156,11831871041123,17354037103279,29185908144402,46539945247681,401505470125850,2054067295876931
%N A215759 Numerators of the continued fraction convergents of log_10(7).
%C A215759 7^(denominator of convergent) gets increasingly close to 10^a(n), agreeing to approximately a(n) digits
%t A215759 Rest[Numerator[Convergents[Log[10,7],30]]] (* _Harvey P. Dale_, Feb 16 2014 *)
%o A215759 (PARI) {my(cf=contfrac(log(7)/log(10))); vector(#cf, i, contfracpnqn( cf[1..i])[1, 1])}
%Y A215759 Denominators are in A215755.
%Y A215759 Cf. A046104, A073733, A082571, A153620.
%K A215759 nonn,frac
%O A215759 0,3
%A A215759 _V. Raman_, Aug 23 2012
%E A215759 a(0)=0 prepended by _Andrew Howroyd_, Jul 09 2024