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 1-2 of 2 results.

A178806 Numbers n such that ||n/log(n)|| * log(n) reaches a new minimum, where ||x|| is the distance from x to the nearest integer.

Original entry on oeis.org

2, 17, 163, 715533, 1432276, 6517719, 11523158, 11985596, 24102781, 254977309, 451207448, 1219588338, 2048539023, 10066616717, 42116139191, 47657002570, 73831354169, 122478947521, 143949453227, 3152420311977, 5624690531099, 14964977749017, 25999244327633, 92799025313425, 164330745650026, 604329910739082
Offset: 1

Views

Author

T. D. Noe, Jun 16 2010

Keywords

Comments

The first 9 terms are from Will Jagy in a MathOverflow answer. Closely related to A178805.
Added 14 more terms from Noam D. Elkies (second MathOverflow link). - T. D. Noe, Feb 12 2013

Crossrefs

Cf. A050499 (nearest integer to n/log(n)).

Programs

  • Mathematica
    mn=Infinity; n=2; Table[While[r=N[n/Log[n]]; diff=Log[n] Abs[r-Round[r]]; diff>=mn, n++ ]; mn=diff; Print[{n,mn}]; n, {9}]

A342355 Decimal expansion of 163/log(163).

Original entry on oeis.org

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

Views

Author

Michal Paulovic, Mar 08 2021

Keywords

Comments

A near-integer close to 32.

Examples

			31.9999987384900826...
		

Crossrefs

Programs

  • MATLAB
    format long; 163 / log(163)
  • Maple
    Digits:=100; evalf(163/ln(163));
  • Mathematica
    RealDigits[163/Log[163], 10, 100][[1]]
  • PARI
    default(realprecision, 100); 163 / log(163)
    

Formula

Equals 163/log(163).
Showing 1-2 of 2 results.