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.

A360664 Number of inequivalent n X n matrices using exactly n different symbols, where equivalence means permutations of rows or columns or the symbol set.

Table of values

n a(n)
0 1
1 1
2 4
3 121
4 316622
5 170309112972
6 27417944542834007012
7 1999576637456562016308833727820
8 95614444589289128555388037722252407519896044
9 4112190260012069813083100063825969898935642267505877920574871

List of values

[1, 1, 4, 121, 316622, 170309112972, 27417944542834007012, 1999576637456562016308833727820, 95614444589289128555388037722252407519896044, 4112190260012069813083100063825969898935642267505877920574871]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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