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.

A055539 Number of asymmetric types of (4,n)-hypergraphs without isolated nodes, under action of symmetric group S_4; asymmetric n-covers of an unlabeled 4-set.

Table of values

n a(n)
3 3
4 44
5 287
6 1315
7 4862
8 15511
9 44360
10 116431
11 284949
12 657696
13 1443853
14 3034549
15 6137552
16 11996470
17 22739586
18 41923060
19 75361026
20 132371521
21 227617365
22 383784757
23 635428859
24 1034423186
25 1657591966
26 2617279946
27 4075841668

List of values

[3, 44, 287, 1315, 4862, 15511, 44360, 116431, 284949, 657696, 1443853, 3034549, 6137552, 11996470, 22739586, 41923060, 75361026, 132371521, 227617365, 383784757, 635428859, 1034423186, 1657591966, 2617279946, 4075841668]

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

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