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.

A086984 Number of arrangements of n labeled balls in n labeled columns where only 1 column may have more than 1 ball.

Table of values

n a(n)
1 1
2 6
3 60
4 696
5 9120
6 134640
7 2227680
8 41005440
9 833172480
10 18546796800
11 449223667200
12 11766674304000
13 331501679308800
14 9997170543360000
15 321355745238528000
16 10969253822951424000
17 396269940892041216000

List of values

[1, 6, 60, 696, 9120, 134640, 2227680, 41005440, 833172480, 18546796800, 449223667200, 11766674304000, 331501679308800, 9997170543360000, 321355745238528000, 10969253822951424000, 396269940892041216000]

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

Content is available under The OEIS End-User License Agreement.