A016644 Decimal expansion of log(21).

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

Offset

1,1

References

Milton Abramowitz and Irene A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 2.

Links

Harry J. Smith, Table of n, a(n) for n = 1..20000

Milton Abramowitz and Irene A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].

Index entries for transcendental numbers

Formula

Eqals A016630 + A002391. - R. J. Mathar, Jul 22 2025

Example

3.044522437723422996500597980365705434284575287404610640194084483575074....

Mathematica

RealDigits[Log[21], 10, 120][[1]] (* Harvey P. Dale, Sep 04 2012 *)

Prog

(PARI) default(realprecision, 20080); x=log(21); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016644.txt", n, " ", d)); \\ Harry J. Smith, May 17 2009, corrected May 20 2009

Crossrefs

Cf. A016449 (continued fraction).

Sequence in context: A201563 A393116 A387770 * A240966 A308109 A354783

Adjacent sequences: A016641 A016642 A016643 * A016645 A016646 A016647

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved