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.

A221434 Number of n X 4 1..(max n,4) arrays with each row and column having unrepeated values.

Table of values

n a(n)
1 24
2 216
3 576
4 576
5 161280
6 283046400
7 782137036800
8 3563924952268800
9 25315180943034286080
10 269169718618593283276800
11 4137679434467601752260608000
12 89264433387042486497787641856000
13 2634485866147603716480364478201856000
14 104038940808800435615474810743389211852800

List of values

[24, 216, 576, 576, 161280, 283046400, 782137036800, 3563924952268800, 25315180943034286080, 269169718618593283276800, 4137679434467601752260608000, 89264433387042486497787641856000, 2634485866147603716480364478201856000, 104038940808800435615474810743389211852800]

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

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