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%I #12 Jun 08 2023 08:51:45
%S 6,3,3,5,1,0,7,0,0,5,5,2,1,9,6,1,9,3,1,8,5,3,2,1,5,6,9,8,8,0,3,3,2,1,
%T 6,1,4,2,7,4,0,3,4,3,2,4,1,3,2,7,2,9,4,7,7,9,8,0,4,0,9,9,4,7,9,7,1,6,
%U 1,4,0,4,5,3,1,0,6,3,0,8,1,8,9,6,3,2,2,3,8,9,4,9,3,6,0,9,1,4,5
%N Decimal expansion of log(1 + log(1 + log(1 + Pi))).
%H Jens Blanck, <a href="https://doi.org/10.1007/3-540-45335-0_24">Exact real arithmetic systems: results of competition</a>, pp. 389-393 of J. Blanck et al., eds., Computability and Complexity in Analysis (CCA 2000), Lect. Notes Computer Science, Springer-Verlag, 2001; <a href="https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=995022a4b87d399debf7b5bda0b52a3615a8499f">alternative link</a>.
%e 0.63351070055219619318532156988033216142740343241327...
%t RealDigits[Log[1 + Log[1 + Log[1 + Pi]]], 10, 120][[1]] (* _Amiram Eldar_, Jun 08 2023 *)
%o (PARI) log(1+log(1+log(1+Pi))) \\ _Charles R Greathouse IV_, Mar 25 2014
%Y Cf. A000796, A053510, A085670.
%K cons,nonn
%O 0,1
%A _N. J. A. Sloane_, Jul 15 2003
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