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.

A210278 (5n)!/5^n.

Original entry on oeis.org

1, 24, 145152, 10461394944, 3892643213082624, 4963587213865915514880, 16976183027980227752723742720, 132264293969742655099733137120296960, 2088743125114618199924764850166056689336320, 61246577083125859615725138685776750112964471685120
Offset: 0

Views

Author

Mohammad K. Azarian, Mar 20 2012

Keywords

Crossrefs

Programs

  • Magma
    [Factorial(5*n)/5^n: n in [0..10]]; // Vincenzo Librandi, Feb 15 2013
  • Mathematica
    Table[(5 n)!/5^n, {n, 0, 10}] (* Vincenzo Librandi, Feb 15 2013 *)
    With[{nn=100},Take[CoefficientList[Series[1/(1-x^5/5),{x,0,nn}],x] Range[0,nn]!,{1,-1,5}]] (* Harvey P. Dale, May 27 2025 *)

Formula

E.g.f.: 1/(1-x^5/5).

A210279 (6n)!/6^n.

Original entry on oeis.org

1, 120, 13305600, 29640619008000, 478741050720092160000, 34111736086958726676480000000, 7973107998754741458076119859200000000, 5019026197962676820927435579005599744000000000
Offset: 0

Views

Author

Mohammad K. Azarian, Apr 12 2012

Keywords

Crossrefs

Programs

  • Magma
    [Factorial(6*n)/6^n: n in [0..10]]; // Vincenzo Librandi, Feb 15 2013
  • Mathematica
    Table[(6 n)!/6^n, {n, 0, 11}] (* Vincenzo Librandi, Feb 15 2013 *)
    With[{nn=50},Take[CoefficientList[Series[1/(1-x^6/6),{x,0,nn}],x] Range[0,nn-2]!,{1,-1,6}]] (* Harvey P. Dale, Sep 25 2023 *)

Formula

E.g.f.: 1/(1-x^6/6).

A210280 (7n)!/7^n.

Original entry on oeis.org

1, 720, 1779148800, 148953184174080000, 126983900296423931904000000, 614812159599342234168301977600000000, 11942354952042770431904585727413846016000000000
Offset: 0

Views

Author

Mohammad K. Azarian, Apr 12 2012

Keywords

Crossrefs

Programs

Formula

E.g.f.: 1/(1-x^7/7).

A210281 (8n)!/8^n.

Original entry on oeis.org

1, 5040, 326918592000, 1211813284635233280000, 64240926985765022013480960000000, 24899758399899222849902687670779904000000000, 47355329866546908076714664639943599847875543040000000000
Offset: 0

Views

Author

Mohammad K. Azarian, Apr 12 2012

Keywords

Crossrefs

Programs

Formula

E.g.f.: 1/(1-x^8/8).
Showing 1-4 of 4 results.