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.

A232206 Triangle read by rows: T(n,k) is the number of non-equivalent regular polygons with n+1 edges, one of which is rooted, which are dissected by non-intersecting diagonals into k regions, such that two such polygons are identified up to reflection along the rooted edge and twisting along the diagonals that does not affect the root edge (for 1 <= k <= n-1 and n >= 2).

Table of values

n a(n)
2 1
3 1
4 1
5 1
6 3
7 2
8 1
9 5
10 8
11 3
12 1
13 8
14 22
15 20
16 6
17 1
18 11
19 46
20 73
21 49
22 11
23 1
24 15
25 87
26 206
27 233
28 119
29 23
30 1
31 19
32 147
33 485
34 807
35 689
36 288
37 46
38 1
39 24
40 236
41 1021
42 2320
43 2891
44 1988
45 696
46 98
47 1
48 29
49 356
50 1960
51 5795
52 9800
53 9737
54 5561
55 1681
56 207
57 1
58 35
59 520
60 3525
61 13088
62 28586
63 38216
64 31350
65 15322
66 4062
67 451
68 1
69 41
70 730
71 5989
72 27224
73 74280
74 127465
75 139901
76 97552
77 41558
78 9821
79 983

List of values

[1, 1, 1, 1, 3, 2, 1, 5, 8, 3, 1, 8, 22, 20, 6, 1, 11, 46, 73, 49, 11, 1, 15, 87, 206, 233, 119, 23, 1, 19, 147, 485, 807, 689, 288, 46, 1, 24, 236, 1021, 2320, 2891, 1988, 696, 98, 1, 29, 356, 1960, 5795, 9800, 9737, 5561, 1681, 207, 1, 35, 520, 3525, 13088, 28586, 38216, 31350, 15322, 4062, 451, 1, 41, 730, 5989, 27224, 74280, 127465, 139901, 97552, 41558, 9821, 983]