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 A129106 #16 Feb 13 2019 04:41:03
%S A129106 6,0,2,2,1,4,1,4,1,0,7,0,4,0,9,0,8,4,0,9,9,0,7,2
%N A129106 Decimal expansion of proposed value for Avogadro's number, namely 602214141070409084099072 = 84446888^3.
%C A129106 For the exact value for the Avogadro constant is N_A = 6.02214076*10^{23} mol^{-1} according to the 2019 SI system of units see A322578. - _Wolfdieter Lang_, Feb 12 2019
%H A129106 R. F. Fox and T. P. Hill, <a href="https://www.researchgate.net/publication/250968868_An_Exact_Value_for_Avogadro's_Number">An exact value for Avogadro's number</a>, American Scientist, 95 (No. 2, 2007), 104-107.
%Y A129106 Cf. A087778 (experimental), A322578 (exact).
%K A129106 nonn,cons,fini,full
%O A129106 24,1
%A A129106 _N. J. A. Sloane_, May 26 2007