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.

A308203 Array read by ascending antidiagonals: T(n,k) = number of non-isomorphic kC_n-snakes for n >= 3 and k >= 2.

Table of values

n a(n)
3 1
4 1
5 1
6 1
7 2
8 1
9 1
10 2
11 3
12 1
13 1
14 3
15 3
16 6
17 1
18 1
19 3
20 6
21 6
22 10
23 1
24 1
25 4
26 6
27 18
28 10
29 20
30 1
31 1
32 4
33 10
34 18
35 45
36 20
37 36
38 1
39 1
40 5
41 10
42 40
43 45
44 135
45 36
46 72
47 1
48 1
49 5
50 15
51 40
52 136
53 135
54 378
55 72
56 136
57 1
58 1
59 6
60 15
61 75
62 136
63 544
64 378
65 1134
66 136
67 272
68 1

List of values

[1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 3, 3, 6, 1, 1, 3, 6, 6, 10, 1, 1, 4, 6, 18, 10, 20, 1, 1, 4, 10, 18, 45, 20, 36, 1, 1, 5, 10, 40, 45, 135, 36, 72, 1, 1, 5, 15, 40, 136, 135, 378, 72, 136, 1, 1, 6, 15, 75, 136, 544, 378, 1134, 136, 272, 1]