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 A072801 #12 Mar 13 2021 10:05:23
%S A072801 0,1,3,1,2,1,1,2,1,1,1,18,1,1,6,5,59,1,2,159,1,5,1,3,1,1,73,1,4,1,3,
%T A072801 22,1,90,9,4,145,1,32,1,2,3,1,2,1,2,4,1,2,12,1,462,1,3,3,2,2,1,1,1,1,
%U A072801 7,2,4,23,1,6,1,2,1,3,1,3,2,6,1,1,10,2,2,10,5,24,3,1,3,1,181,5,1,1,3,4,3,1
%N A072801 Continued fraction expansion of Product_{p prime} (1 - 1/(p*(p^2-1))).
%H A072801 G. Niklasch, <a href="/A001692/a001692.html">Some number-theoretical constants: 1000-digit values</a>. [Cached copy]
%o A072801 (PARI) contfrac(prodeulerrat(1 - 1/(p*(p^2-1)))) \\ _Amiram Eldar_, Mar 13 2021
%Y A072801 Cf. A065470 (decimal expansion).
%K A072801 cofr,nonn
%O A072801 0,3
%A A072801 _Rick L. Shepherd_, Jul 11 2002