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%I #16 Sep 08 2022 08:45:40
%S 1,5,3,9,5,0,1,8,4,9,5,6,2,9,6,0,5,0,3,3,3,2,1,0,5,6,3,9,6,4,8,1,4,9,
%T 6,7,7,4,6,3,2,0,1,6,8,5,7,1,5,2,0,8,4,2,3,3,9,5,9,1,7,3,6,8,2,4,6,7,
%U 7,9,4,5,6,9,0,7,7,1,9,4,4,6,6,3,7,3,7,2,2,2,7,3,5,2,0,5,4,2,2
%N Decimal expansion of log_7(20).
%H Vincenzo Librandi, <a href="/A155496/b155496.txt">Table of n, a(n) for n = 1..1000</a>
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e 1.5395018495629605033321056396481496774632016857152084233959...
%t RealDigits[Log[7,20],10,120][[1]] (* _Harvey P. Dale_, Dec 08 2011 *)
%o (PARI) default(realprecision, 100); log(20)/log(7) \\ _G. C. Greubel_, Sep 02 2018
%o (Magma) SetDefaultRealField(RealField(100)); Log(20)/Log(7); // _G. C. Greubel_, Sep 02 2018
%Y Cf. decimal expansion of log_7(m): A152713 (m=2), A152945 (m=3), A153103 (m=4), A153203 (m=5), A153463 (m=6), A153755 (m=8), A113211 (m=9), A154158 (m=10), A154179 (m=11), A154200 (m=12), A154294 (m=13), A154467 (m=14), A154572 (m=15), A154793 (m=16), A154857 (m=17), A154912 (m=18), A155059 (m=19), this sequence, A155591 (m=21), A155735 (m=22), A155824 (m=23), A155964 (m=24).
%K nonn,cons
%O 1,2
%A _N. J. A. Sloane_, Oct 30 2009
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