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 A215755 #24 Jul 09 2024 12:46:45
%S A215755 1,1,6,13,71,439,510,2455069,2455579,4910648,12276875,29464398,
%T A215755 71205671,100670069,171875740,272545809,1807150594,9308298779,
%U A215755 11115449373,931890596738,6534349626539,14000589849816,20534939476355,34535529326171,55070468802526,475099279746379,2430566867534421
%N A215755 Denominators of the continued fraction convergents of log_10(7).
%C A215755 7^a(n) gets increasingly close to 10^(numerator of convergent).
%t A215755 Rest[Denominator[Convergents[Log[10,7],30]]] (* _Harvey P. Dale_, Aug 23 2013 *)
%o A215755 (PARI) {my(cf=contfrac(log(7)/log(10))); vector(#cf, i, contfracpnqn( cf[1..i])[2, 1])}
%Y A215755 Numerators are in A215759.
%Y A215755 Cf. A046104, A073733, A082571, A153620.
%K A215755 nonn,frac
%O A215755 0,3
%A A215755 _V. Raman_, Aug 23 2012
%E A215755 a(0)=1 prepended by _Andrew Howroyd_, Jul 09 2024