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.

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A016723 Decimal expansion of log(100).

Original entry on oeis.org

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

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Examples

			4.605170185988091368035982909368728415202202977257545952066655801935145....
		

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.

Crossrefs

Cf. A016528 (continued fraction).

Programs

  • Magma
    SetDefaultRealField(RealField(100)); 2*Log(10); // G. C. Greubel, Sep 15 2018
  • Mathematica
    RealDigits[2*Log[10], 10,100][[1]] (* G. C. Greubel, Sep 15 2018 *)
  • PARI
    default(realprecision, 20080); x=log(100); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016723.txt", n, " ", d)); \\ Harry J. Smith, May 25 2009
    

Formula

Equals 2*A002392.

A113160 Table read by antidiagonals of continued fractions for log(n).

Original entry on oeis.org

0, 1, 1, 2, 10, 1, 3, 7, 2, 1, 1, 9, 1, 1, 1, 6, 2, 1, 1, 1, 1, 3, 2, 2, 1, 3, 1, 2, 1, 1, 3, 1, 1, 17, 12, 2, 1, 3, 7, 3, 4, 2, 1, 5, 2, 2, 1, 6, 1, 18, 19, 1, 14, 3, 2, 1, 32, 4, 1, 2, 1, 2, 4, 3, 2, 2, 1, 2, 1, 1, 330, 11, 2, 1, 3, 1, 2, 2, 1, 17, 1, 3, 3, 2, 1, 2, 1, 1, 16, 1, 2, 1, 1, 21, 4, 1, 1, 8, 2
Offset: 2

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Author

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Examples

			The table starts:
0,1,2,3,1,6,...
1,10,7,9,2,2,...
1,2,1,1,2,3,...
		

Crossrefs

Rows A016730 to A016740, A016441 to A016528; columns A000195, A057603.
Showing 1-2 of 2 results.