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.

A280752 Numerators of triangle related to enumeration of minimal 2-covers of a labeled n-set.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 10
10 1
11 1
12 2
13 865
14 71
15 1
16 1
17 5
18 2630
19 1427
20 181
21 1
22 1
23 3
24 163133
25 306553
26 36667
27 145
28 1
29 1
30 7
31 3368938
32 129115655
33 46958822
34 43662
35 4036
36 1

List of values

[1, 1, 1, 1, 1, 1, 1, 3, 10, 1, 1, 2, 865, 71, 1, 1, 5, 2630, 1427, 181, 1, 1, 3, 163133, 306553, 36667, 145, 1, 1, 7, 3368938, 129115655, 46958822, 43662, 4036, 1]