A020861 Decimal expansion of log_2(9).

3, 1, 6, 9, 9, 2, 5, 0, 0, 1, 4, 4, 2, 3, 1, 2, 3, 6, 2, 9, 0, 7, 4, 7, 7, 8, 8, 7, 8, 9, 5, 6, 3, 3, 0, 1, 7, 5, 1, 9, 6, 2, 8, 8, 1, 5, 3, 8, 4, 9, 6, 2, 1, 2, 0, 9, 1, 1, 5, 0, 5, 3, 0, 9, 0, 8, 2, 1, 9, 6, 4, 5, 5, 5, 8, 8, 7, 1, 7, 1, 2, 5, 0, 4, 4, 5, 6, 0, 9, 4, 9, 8, 3, 6, 1, 7, 6, 4, 8

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Examples

			3.16992500144231236290747788789563301751962881538496...
		

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000
• Index entries for transcendental numbers.

Crossrefs

Cf. decimal expansion of log_2(m): A020857 (m=3), A020858 (m=5), A020859 (m=6), A020860 (m=7), this sequence, A020862 (m=10), A020863 (m=11), A020864 (m=12), A152590 (m=13), A154462 (m=14), A154540 (m=15), A154847 (m=17), A154905 (m=18), A154995 (m=19), A155172 (m=20), A155536 (m=21), A155693 (m=22), A155793 (m=23), A155921 (m=24).

Programs

Mathematica

RealDigits[Log[9]/Log[2],10,120][[1]] (* Harvey P. Dale, Jul 08 2013 *)
RealDigits[Log2[9],10,120][[1]] (* Harvey P. Dale, May 21 2023 *)

PARI

log(9)/log(2) \\ Charles R Greathouse IV, Aug 06 2020

Formula

Equals 2 * A020857. - Amiram Eldar, Jun 25 2023

Extensions

Definition improved by J. Lowell, May 03 2014