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.

A255951 Number of collections of nonempty multisets with a total of n+1 objects of exactly n colors.

Table of values

n a(n)
0 0
1 2
2 8
3 33
4 144
5 675
6 3396
7 18270
8 104656
9 635679
10 4078460
11 27544781
12 195219624
13 1447922814
14 11210516128
15 90405000105
16 757823763968
17 6591085453935
18 59379154929180
19 553270283842586
20 5324267165971800
21 52849751984814183
22 540469505506572620
23 5688102295215875017

List of values

[0, 2, 8, 33, 144, 675, 3396, 18270, 104656, 635679, 4078460, 27544781, 195219624, 1447922814, 11210516128, 90405000105, 757823763968, 6591085453935, 59379154929180, 553270283842586, 5324267165971800, 52849751984814183, 540469505506572620, 5688102295215875017]

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

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