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.

Previous Showing 21-23 of 23 results.

A198803 Number of closed paths of length 17n whose steps are 17th roots of unity.

Original entry on oeis.org

1, 355687428096000, 2252447502438386084347676160000000, 91637618063484032681381970173925718228992000000000000, 8528384964488882787308232082310780143738202829970606470279000000000000000
Offset: 0

Views

Author

Simon Plouffe, Oct 30 2011

Keywords

Comments

Equivalently, the number of paths of length 17n in Z^17 from {0}^17 to {n}^17. - Andrew Howroyd, Nov 01 2018

Crossrefs

Row n=17 of A187783, column k=17 of A089759.

Programs

Formula

a(n) = (17*n)!/(n!)^17. - Andrew Howroyd, Nov 01 2018

Extensions

Sequence redefined and a(2)-a(4) from Andrew Howroyd, Nov 01 2018

A198809 Number of closed paths of length 11n whose steps are 11th roots of unity.

Original entry on oeis.org

1, 39916800, 548828480360160000, 23934366266775567482880000000, 1746930746117010628955362040959500000000, 170878335353097656943918169452451079403744627916800, 20193738534370392855946567010492898163504440783192016158720000
Offset: 0

Views

Author

Simon Plouffe, Oct 30 2011

Keywords

Comments

Equivalently, the number of paths of length 11n in Z^11 from {0}^11 to {n}^11. - Andrew Howroyd, Nov 01 2018

Crossrefs

Row n=11 of A187783, column k=11 of A089759.

Programs

Formula

a(n) = (11*n)!/(n!)^11. - Andrew Howroyd, Nov 01 2018

Extensions

Sequence redefined and a(2)-a(6) from Andrew Howroyd, Nov 01 2018

A198807 Number of closed paths of length 13n whose steps are 13th roots of unity.

Original entry on oeis.org

1, 6227020800, 49229914688306352000000, 1561776277448122046153927884800000000, 92024242230271040357108320801872044844750000000000, 7708574168669332219803079339976372645861971547841327593737420800
Offset: 0

Views

Author

Simon Plouffe, Oct 30 2011

Keywords

Comments

Equivalently, the number of paths of length 13n in Z^13 from {0}^13 to {n}^13. - Andrew Howroyd, Nov 01 2018

Crossrefs

Row n=13 of A187783, column k=13 of A089759.

Programs

Formula

a(n) = (13*n)!/(n!)^13. - Andrew Howroyd, Nov 01 2018

Extensions

Sequence redefined and a(2)-a(5) from Andrew Howroyd, Nov 01 2018
Previous Showing 21-23 of 23 results.