A155522 Decimal expansion of log_10 (20).

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

Offset

1,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Index entries for transcendental numbers

Formula

Equals 1+A007524. - R. J. Mathar, Dec 03 2025

Example

1.3010299956639811952137388947244930267681898814621085413104...

Mathematica

RealDigits[Log[10, 20], 10, 100][[1]] (* Vincenzo Librandi, Sep 11 2013 *)

Prog

(PARI) log(20)/log(10) \\ Charles R Greathouse IV, Aug 06 2020

Crossrefs

Cf. decimal expansion of log_10(m): A007524 (m=2), A114490 (m=3), A114493 (m=4), A153268 (m=5), A153496 (m=6), A153620 (m=7), A153790 (m=8), A104139 (m=9), A154182 (m=11), A154203 (m=12), A154368 (m=13), A154478 (m=14), A154580 (m=15), A154794 (m=16), A154860 (m=17), A154953 (m=18), A155062 (m=19), this sequence, A155677 (m=21), A155746 (m=22), A155830 (m=23), A155979 (m=24).

Sequence in context: A101270 A351097 A381747 * A007524 A357868 A357881

Adjacent sequences: A155519 A155520 A155521 * A155523 A155524 A155525

Keyword

nonn,cons

Author

N. J. A. Sloane, Oct 30 2009

Status

approved