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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.

A321880 Number of partitions of n into colored blocks of equal parts with colors from a set of size n.

Table of values

n a(n)
0 1
1 1
2 4
3 15
4 44
5 135
6 456
7 1239
8 3424
9 8694
10 27240
11 65846
12 171864
13 406133
14 960848
15 2615460
16 5998416
17 14304089
18 32273100
19 72271516
20 153768520
21 385905072
22 817485768
23 1841794483
24 3915726528
25 8388036950
26 17125197336
27 35051814558
28 78986793592
29 160176485813

List of values

[1, 1, 4, 15, 44, 135, 456, 1239, 3424, 8694, 27240, 65846, 171864, 406133, 960848, 2615460, 5998416, 14304089, 32273100, 72271516, 153768520, 385905072, 817485768, 1841794483, 3915726528, 8388036950, 17125197336, 35051814558, 78986793592, 160176485813]

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

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