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.

A275293 Number of set partitions of [2n] with symmetric block size list of length four.

Table of values

n a(n)
2 1
3 13
4 171
5 2306
6 31795
7 446349
8 6357295
9 91615780
10 1333116522
11 19555739050
12 288834920011
13 4291094756898
14 64074785496631
15 961011037139573
16 14469795095794935
17 218624167641077960
18 3313409217150899536
19 50356639055387740752
20 767231549954564821746

List of values

[1, 13, 171, 2306, 31795, 446349, 6357295, 91615780, 1333116522, 19555739050, 288834920011, 4291094756898, 64074785496631, 961011037139573, 14469795095794935, 218624167641077960, 3313409217150899536, 50356639055387740752, 767231549954564821746]

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

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