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.

A159735 Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 3 local maxima.

Original entry on oeis.org

0, 120, 104160, 43965760, 14780546400, 4552085003160, 1344988823772440, 387866444580875520, 109997436597621865920, 30801926079814805641600, 8538476664330640027144320, 2347317237607372501196513280, 640818430658412951758052362240, 173908317523621059703082725693440
Offset: 1

Views

Author

R. H. Hardin, Apr 20 2009

Keywords

Crossrefs

Programs

  • PARI
    \\ CircPeaksBySig defined in A334778.
    a(n) = {CircPeaksBySig(vector(n, i, 5), [3])[1]} \\ Andrew Howroyd, May 14 2020

Extensions

Terms a(7) and beyond from Andrew Howroyd, May 14 2020