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%I #13 Aug 21 2023 10:00:19
%S 1,3,1,5,4,6,4,8,7,6,7,8,5,7,2,8,7,1,8,5,4,9,7,6,3,5,5,7,1,7,1,3,8,0,
%T 4,2,7,1,4,9,7,9,2,8,2,0,0,6,5,9,4,0,2,1,3,9,3,5,3,2,7,4,7,1,9,1,9,3,
%U 4,2,6,0,0,6,9,0,4,5,7,4,0,2,5,3,0,5,8,6,3,4,4,2,7,4,7,2,5,8,7
%N Decimal expansion of log_9 (18).
%H Vincenzo Librandi, <a href="/A154947/b154947.txt">Table of n, a(n) for n = 1..1000</a>
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F Equals 1+A152747. - _R. J. Mathar_, Jan 07 2021
%e 1.3154648767857287185497635571713804271497928200659402139353...
%t RealDigits[Log[9, 18], 10, 100][[1]] (* _Vincenzo Librandi_, Sep 01 2013 *)
%o (PARI) default(realprecision, 100); log(18)/log(9) \\ _G. C. Greubel_, Sep 01 2018
%o (Magma) SetDefaultRealField(RealField(100)); Log(18)/Log(9); // _G. C. Greubel_, Sep 01 2018
%Y Cf. decimal expansion of log_9(m): A152747 (m=2), A153205 (m=5), A153495 (m=6), A153619 (m=7), A153756 (m=8), A154160 (m=10), A154181 (m=11), A154202 (m=12), A154339 (m=13), A154469 (m=14), A154578 (m=15), A154859 (m=17), this sequence, A155061 (m=19), A155503 (m=20), A155676 (m=21), A155743 (m=22), A155829 (m=23), A155976 (m=24).
%K nonn,cons
%O 1,2
%A _N. J. A. Sloane_, Oct 30 2009
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