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A215753
Denominators of the continued fraction convergents of log_10(3).
2
1, 2, 21, 44, 109, 153, 2098, 2251, 17855, 323641, 665137, 1653915, 2319052, 6292019, 21195109, 91072455, 112267564, 203340019, 2959027830, 6121395679, 272300437706, 278421833385, 1107565937861, 1385987771246, 20511394735305, 42408777241856, 105328949219017, 147737726460873
OFFSET
0,2
COMMENTS
3^a(n) gets increasingly close to 10^(numerator of convergent).
MATHEMATICA
Denominator[Convergents[Log[10, 3], 30]] (* Harvey P. Dale, Jan 24 2015 *)
PROG
(PARI) {my(cf=contfrac(log(3)/log(10))); vector(#cf, i, contfracpnqn( cf[1..i])[2, 1])}
CROSSREFS
Numerators are in A215757.
Sequence in context: A355710 A089558 A266873 * A041049 A224346 A005484
KEYWORD
nonn,frac
AUTHOR
V. Raman, Aug 23 2012
STATUS
approved