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.

A140186 Number of connected groupoids (categories all of whose morphisms are invertible) with n more morphisms than objects.

Table of values

n a(n)
0 2
1 1
2 2
3 2
4 1
5 2
6 3
7 5
8 2
9 2
10 2
11 5
12 2
13 2
14 3
15 15
16 1
17 5
18 2
19 5
20 3
21 2
22 3
23 15
24 3
25 2
26 6
27 4
28 2
29 4
30 7
31 51
32 1
33 4
34 3
35 14
36 1
37 2
38 4
39 14
40 1
41 6
42 4
43 4
44 3
45 3
46 6
47 52
48 2
49 5
50 2
51 7
52 1
53 15
54 4
55 13
56 3
57 2
58 2
59 13
60 4
61 2
62 18
63 267
64 1
65 4
66 3
67 5
68 1
69 9
70 7
71 50
72 2
73 2
74 4
75 4
76 2
77 6
78 8
79 52
80 15
81 2
82 3
83 15
84 1
85 2
86 3
87 14
88 1
89 10
90 3
91 5
92 4

List of values

[2, 1, 2, 2, 1, 2, 3, 5, 2, 2, 2, 5, 2, 2, 3, 15, 1, 5, 2, 5, 3, 2, 3, 15, 3, 2, 6, 4, 2, 4, 7, 51, 1, 4, 3, 14, 1, 2, 4, 14, 1, 6, 4, 4, 3, 3, 6, 52, 2, 5, 2, 7, 1, 15, 4, 13, 3, 2, 2, 13, 4, 2, 18, 267, 1, 4, 3, 5, 1, 9, 7, 50, 2, 2, 4, 4, 2, 6, 8, 52, 15, 2, 3, 15, 1, 2, 3, 14, 1, 10, 3, 5, 4]