cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-4 of 4 results.

A153020 Decimal expansion of log_17 (3).

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane, Oct 30 2009

Keywords

Examples

			.38776193503849007543619936073441864683067362944387624234675...

Links

Crossrefs

Cf. decimal expansion of log_17(m): A152782 (m=2), this sequence, A153109 (m=4), A153430 (m=5), A153607 (m=6), A153627 (m=7), A153858 (m=8), A154016 (m=9), A154167 (m=10), A154188 (m=11), A154209 (m=12), A154399 (m=13), A154489 (m=14), A154683 (m=15), A154827 (m=16), A154974 (m=18), A155080 (m=19), A155529 (m=20), A155684 (m=21), A155783 (m=22), A155880 (m=23), A155992 (m=24).

Programs

  • Mathematica
    RealDigits[Log[17, 3], 10, 100][[1]] (* Vincenzo Librandi, Sep 03 2013 *)

Formula

The ratio A002391/A016640.

A154858 Decimal expansion of log_8 (17).

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane, Oct 30 2009

Keywords

Examples

			1.3624876137501131360846886702701347846704224274482735627088...

Links

Crossrefs

Cf. decimal expansion of log_8(m): A152956 (m=3), A153204 (m=5), A153493 (m=6), A153618 (m=7), A154010 (m=9), A154159 (m=10), A154180 (m=11), A154201 (m=12), A154309 (m=13), A154468 (m=14), A154574 (m=15), this sequence, A154927 (m=18), A155060 (m=19), A155502 (m=20), A155675 (m=21), A155741 (m=22), A155827 (m=23), A155975 (m=24).

Programs

  • Magma
    SetDefaultRealField(RealField(100)); Log(17)/Log(8); // G. C. Greubel, Aug 31 2018
  • Mathematica
    RealDigits[Log[8, 17], 10, 100][[1]] (* Vincenzo Librandi, Sep 01 2013 *)
  • PARI
    default(realprecision, 100); log(17)/log(8) \\ G. C. Greubel, Aug 31 2018

Formula

Equals A016640 / A016631 = A154847/3. - R. J. Mathar, Apr 11 2024

A016445 Continued fraction for log(17).

Original entry on oeis.org

2, 1, 4, 1, 230, 1, 2, 50, 1, 11, 2, 2, 1, 1, 7, 1, 8, 1, 90, 1, 3, 2, 5, 5, 1, 2, 3, 2, 4, 1, 17, 1, 401, 13, 2, 1, 22, 3, 1, 8, 1, 22, 1, 4, 1, 1, 3, 1, 2, 3, 3, 2, 7, 32, 1, 14, 2, 1, 1, 1, 3, 1, 6, 58, 1, 1, 1, 1, 1, 1, 3, 2, 6, 1, 3
Offset: 1

Views

Author

N. J. A. Sloane

Keywords

Examples

			2.8332133440562160802495346... = 2 + 1/(1 + 1/(4 + 1/(1 + 1/(230 + ...)))). - _Harry J. Smith_, May 17 2009

Links

Crossrefs

Cf. A016640 Decimal expansion. - Harry J. Smith, May 17 2009

Programs

  • Mathematica
    ContinuedFraction[Log[17],120] (* Harvey P. Dale, Sep 20 2017 *)
  • PARI
    { allocatemem(932245000); default(realprecision, 21000); x=contfrac(log(17)); for (n=1, 20000, write("b016445.txt", n, " ", x[n])); } \\ Harry J. Smith, May 17 2009

A016674 Decimal expansion of log(51).

Original entry on oeis.org

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

Views

Author

N. J. A. Sloane

Keywords

Examples

			3.931825632724325771644779854795652240235693570408494239031932071519786....

References

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

Links

Crossrefs

Cf. A016479 (continued fraction).

Programs

  • Mathematica
    RealDigits[Log[51],10,120][[1]] (* Harvey P. Dale, Sep 30 2012 *)
  • PARI
    default(realprecision, 20080); x=log(51); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016674.txt", n, " ", d)); \\ Harry J. Smith, May 21 2009

Formula

Equals A002391 + A016640. - R. J. Mathar, Jun 07 2024
Showing 1-4 of 4 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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