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.

A338424 Permanent of n X n matrix whose rows are cyclic permutations of 2..prime(n).

Original entry on oeis.org

1, 2, 13, 250, 8961, 821848, 90031117, 16929468082, 3699112438993, 1172372082948016, 592930150554224105, 314980461163972949868, 237098727748233796765441, 209617206588771062279193558, 193794661072190257001413994605, 210096924743130844484817519143524, 287845708921326527700201694718406369
Offset: 0

Views

Author

Stefano Spezia, Oct 25 2020

Keywords

Examples

			a(3) = 250 because the permanent of [(2,3,5), (3,5,2), (5,2,3)] is 250.
		

Crossrefs

Programs

  • PARI
    a(n) = matpermanent(matrix(n, n, i, j, prime((i+j-2) % n + 1)))