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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.

A268365 Number of n X 4 arrays of permutations of 4 copies of 0..n-1 with row sums equal.

Table of values

n a(n)
1 1
2 36
3 2700
4 643680
5 190188000
6 128247235200
7 114921318153600
8 164433011758848000
9 312067875406065408000
10 867549791919350615040000
11 2986581009309337422259200000

List of values

[1, 36, 2700, 643680, 190188000, 128247235200, 114921318153600, 164433011758848000, 312067875406065408000, 867549791919350615040000, 2986581009309337422259200000]

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

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