Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #9 Aug 14 2023 11:05:50
%S 9,6,7,1,2,6,7,1,3,4,3,2,3,3,0,2,5,9,0,8,6,2,2,5,2,7,0,3,1,0,3,6,4,0,
%T 6,2,1,0,6,9,6,6,3,3,3,3,9,8,2,2,3,0,6,7,6,7,7,4,6,7,4,0,8,2,2,0,0,3,
%U 0,1,3,5,7,6,5,0,8,3,9,1,6,0,7,3,2,9,0,3,4,8,9,7,1,3,9,6,1,2,3
%N Decimal expansion of log_21 (19).
%H Vincenzo Librandi, <a href="/A155129/b155129.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e .96712671343233025908622527031036406210696633339822306767746...
%t RealDigits[Log[21, 19], 10, 120][[1]] (* _Harvey P. Dale_, Dec 11 2012 *)
%Y Cf. decimal expansion of log_21(m): A152825 (m=2), A153097 (m=3), A153131 (m=4), A153455 (m=5), A153611 (m=6), A153632 (m=7), A153895 (m=8), A154020 (m=9), A154171 (m=10), A154192 (m=11), A154213 (m=12), A154434 (m=13), A154499 (m=14), A154707 (m=15), A154839 (m=16), A154901 (m=17), A154977 (m=18), this sequence, A155532 (m=20), A155790 (m=22), A155909 (m=23), A156028 (m=24).
%K nonn,cons
%O 0,1
%A _N. J. A. Sloane_, Oct 30 2009