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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A132709 Decimal expansion of 19/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			6.04788783749202275921758300815554575730946653813734505241135907423807831010....

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696-A132699, A132701, A132702.

Programs

Extensions

More terms from Vladimir Joseph Stephan Orlovsky, Dec 02 2009

A132711 Decimal expansion of 21/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			6.6845076098596041022931180616456032054473051210991708474020284504736655006....

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696-A132699, A132701, A132702.

Programs

Extensions

More terms from Vladimir Joseph Stephan Orlovsky, Dec 02 2009

A132712 Decimal expansion of 22/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			7.002817496043394773830885588390631929516224412580083744897363138591459095....

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696 through A132699, A132701, A132702.

Programs

Extensions

More terms from Vladimir Joseph Stephan Orlovsky, Dec 03 2009

A132713 Decimal expansion of 23/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			7.321127382227185445368653115135660653585143704060996642392697826709252691....

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696 to A132699, A132701, A132702.

Programs

Extensions

More terms from Vladimir Joseph Stephan Orlovsky, Dec 03 2009

A132715 Decimal expansion of 25/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007, Dec 30 2008

Keywords

Comments

Starting with 0, 0, 7, 9, 5, ... this is also the decimal expansion of 1/(4*Pi). Example: 0.079577471545947667884441881686257181... - Omar E. Pol, Jan 18 2013

Examples

			7.9577471545947667884441881686257181...

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696 to A132699, A132701, A132702.

Programs

Formula

1/(4*Pi) = Integral_{x>=0} cos(Pi*x/2)/(exp(2*Pi*sqrt(x))-1) dx (Ramanujan, 1913). - Amiram Eldar, Jan 01 2025

Extensions

More digits from R. J. Mathar, Aug 17 2009

A132716 Decimal expansion of 26/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			8.276057040778557459981955695370746825791901578503735334878701891062633....

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696-A132699, A132701, A132702.

Programs

Extensions

More terms from Vladimir Joseph Stephan Orlovsky, Dec 03 2009

A132718 Decimal expansion of 28/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			8.912676813146138803...

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696 to A132699, A132701, A132702.

Programs

A132719 Decimal expansion of 29/Pi.

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Aug 31 2007

Keywords

Examples

			9.230986699...

Links

Crossrefs

Cf. A049541, A060294, A089491, A088538, A086201, A132696 to A132699, A132701, A132702.

Programs

Extensions

More terms from Harvey P. Dale, Jan 21 2013

A182997 Decimal expansion of c/(2*Pi), where c = 299792458 (exactly) is the speed of light in vacuum (m/s).

Original entry on oeis.org

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

Views

Author

Omar E. Pol, Dec 17 2010

Keywords

Comments

Decimal expansion of 149896229/Pi.

Examples

			47713451.592369422588888983337736450234612537898340668812014...
If the circumference of a circle is equal to 299792458 meters then the radius is equal to 47713451.59... meters.

Crossrefs

Cf. A000796, A003678, A019692, A086201, A132997, A167526.

Programs

  • Mathematica
    RealDigits[299792458/(2Pi),10,120][[1]] (* Harvey P. Dale, Feb 09 2019 *)
  • PARI
    x=299792458/(2*Pi)/10^7; for(k=1, 100, my(d=floor(x)); x=(x-d)*10; print1(d, ", ")) \\ Felix Fröhlich, Mar 31 2018

Formula

Equals A003678 / A019692 = A003678 * A086201. - Omar E. Pol, Mar 18 2018

Extensions

Edited by N. J. A. Sloane, Dec 18 2010

A276635 Decimal expansion of the power tower of 1/(2*Pi): the real solution to (2*Pi)^x*x = 1.

Original entry on oeis.org

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

Views

Author

Ilya Gutkovskiy, Sep 08 2016

Keywords

Examples

			(1/(2*Pi))^(1/(2*Pi))^(1/(2*Pi))^... = 0.443001457438838056674419269992719...

Links

Crossrefs

Cf. A019692, A073243, A061444, A086201.

Programs

  • Mathematica
    RealDigits[ProductLog[Log[2 Pi]]/Log[2 Pi], 10, 120][[1]]

Formula

Equals LambertW(log(2*Pi))/log(2*Pi).
Equals exp(-LambertW(A061444)).
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