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 A073365 #15 Dec 16 2019 11:57:01 %S A073365 1,3,5,1,6,8,7,0,1,6,2,0,5,2,9,6,2,7,6,9,9,9,5,8,1,2,8,2,3,5,1,5,9,2, %T A073365 9,8,6,6,8,4,2,1,8,9,5,7,3,2,0,6,4,2,5,0,4,2,0,5,3,6,0,7,4,6,0,6,5,9, %U A073365 8,2,6,9,3,7,7,0,3,0,4,4,7,0,9,6,9,7,3,4,6,8,5,9,0,9,3,8,5,7,4,3,3,6,8,4 %N A073365 Decimal expansion of log(log(Pi)). %C A073365 Cheng, Dietel, Herblot, Huang, Krieger, Marques, Mason, Mereb, & Wilson show, expanding a remark by S. Lang, that Schanuel's conjecture implies that this constant and Pi are algebraically independent over a set E which includes the algebraic numbers and (in a technical sense) allows any finite number of exponentiations, see the paper for details and a still more general result. - _Charles R Greathouse IV_, Dec 16 2019 %H A073365 Chuangxun Cheng, Brian Dietel, Mathilde Herblot, Jingjing Huang, Holly Krieger, Diego Marques, Jonathan Mason, Martin Mereb, S. Robert Wilson, <a href="https://doi.org/10.1016/j.jnt.2008.10.018">Some consequences of Schanuel's conjecture</a>, Journal of Number Theory 129:6 (2009), pp. 1464-1467. %e A073365 0.13516870162052962769995812823... %t A073365 RealDigits[Log[Log[Pi]],10,120][[1]] (* _Harvey P. Dale_, Mar 11 2017 *) %o A073365 (PARI) log(log(Pi)) %Y A073365 Cf. A000796 (Pi), A053510 (log(Pi)), A053511 (log_10(Pi)). %K A073365 cons,nonn %O A073365 0,2 %A A073365 _Rick L. Shepherd_, Jul 29 2002