A152821 - OEIS

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A152821

Decimal expansion of log_20 (2).

22

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

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OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for transcendental numbers

FORMULA

Equals A002162 / A016643 = 1/A155172. - R. J. Mathar, Aug 13 2024

EXAMPLE

.23137821315975917426369770109764049589096550737356586183961...

MATHEMATICA

RealDigits[Log[20, 2], 10, 100][[1]] (* Vincenzo Librandi, Sep 05 2013 *)

PROG

(PARI) log(2)/log(20) \\ Charles R Greathouse IV, Aug 06 2020

CROSSREFS

Cf. decimal expansion of log_20(m): this sequence, A153035 (m=3), A153124 (m=4), A153454 (m=5), A153610 (m=6), A153630 (m=7), A153872 (m=8), A154019 (m=9), A154170 (m=10), A154191 (m=11), A154212 (m=12), A154433 (m=13), A154492 (m=14), A154705 (m=15), A154838 (m=16), A154900 (m=17), A154976 (m=18), A155115 (m=19), A155687 (m=21), A155789 (m=22), A155907 (m=23), A156015 (m=24).

Sequence in context: A209567 A208338 A236918 * A071943 A357329 A062869

Adjacent sequences: A152818 A152819 A152820 * A152822 A152823 A152824

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane, Oct 30 2009

STATUS

approved