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.

A320742 Array read by antidiagonals: T(n,k) is the number of chiral pairs of color patterns (set partitions) in a cycle of length n using k or fewer colors (subsets).

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 0
21 0
22 0
23 0
24 0
25 0
26 0
27 0
28 0
29 0
30 0
31 0
32 0
33 0
34 4
35 1
36 0
37 0
38 0
39 0
40 0
41 0
42 6
43 13
44 2
45 0
46 0
47 0
48 0
49 0
50 0
51 6
52 30
53 46
54 7
55 0
56 0
57 0
58 0
59 0
60 0
61 6
62 34
63 130
64 144
65 12
66 0
67 0
68 0
69 0
70 0
71 0
72 6
73 34
74 181
75 532
76 420
77 31
78 0
79 0
80 0
81 0
82 0
83 0
84 6
85 34
86 190
87 871
88 2006
89 1221
90 58
91 0
92 0
93 0
94 0
95 0
96 0
97 6
98 34
99 190
100 996
101 4016
102 7626
103 3474
104 126
105 0
106 0
107 0
108 0
109 0
110 0
111 6
112 34
113 190
114 1011
115 5070
116 18526
117 28401
118 9856
119 234
120 0

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 1, 0, 0, 0, 0, 0, 0, 6, 13, 2, 0, 0, 0, 0, 0, 0, 6, 30, 46, 7, 0, 0, 0, 0, 0, 0, 6, 34, 130, 144, 12, 0, 0, 0, 0, 0, 0, 6, 34, 181, 532, 420, 31, 0, 0, 0, 0, 0, 0, 6, 34, 190, 871, 2006, 1221, 58, 0, 0, 0, 0, 0, 0, 6, 34, 190, 996, 4016, 7626, 3474, 126, 0, 0, 0, 0, 0, 0, 6, 34, 190, 1011, 5070, 18526, 28401, 9856, 234, 0]