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.

A320747 Array read by antidiagonals: T(n,k) is the number of color patterns (set partitions) in an oriented cycle of length n using k or fewer colors (subsets).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 1
7 1
8 2
9 2
10 1
11 1
12 2
13 3
14 4
15 1
16 1
17 2
18 3
19 6
20 4
21 1
22 1
23 2
24 3
25 7
26 9
27 8
28 1
29 1
30 2
31 3
32 7
33 11
34 26
35 10
36 1
37 1
38 2
39 3
40 7
41 12
42 39
43 53
44 20
45 1
46 1
47 2
48 3
49 7
50 12
51 42
52 103
53 146
54 30
55 1
56 1
57 2
58 3
59 7
60 12
61 43
62 123
63 367
64 369
65 56
66 1
67 1
68 2
69 3
70 7
71 12
72 43
73 126
74 503
75 1235
76 1002
77 94
78 1
79 1
80 2
81 3
82 7
83 12
84 43
85 127
86 539
87 2008
88 4439
89 2685
90 180
91 1
92 1
93 2
94 3
95 7
96 12
97 43
98 127
99 543
100 2304
101 8720
102 15935
103 7434
104 316
105 1
106 1
107 2
108 3
109 7
110 12
111 43
112 127
113 544
114 2356
115 11023
116 38365
117 58509
118 20441
119 596
120 1

List of values

[1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 3, 4, 1, 1, 2, 3, 6, 4, 1, 1, 2, 3, 7, 9, 8, 1, 1, 2, 3, 7, 11, 26, 10, 1, 1, 2, 3, 7, 12, 39, 53, 20, 1, 1, 2, 3, 7, 12, 42, 103, 146, 30, 1, 1, 2, 3, 7, 12, 43, 123, 367, 369, 56, 1, 1, 2, 3, 7, 12, 43, 126, 503, 1235, 1002, 94, 1, 1, 2, 3, 7, 12, 43, 127, 539, 2008, 4439, 2685, 180, 1, 1, 2, 3, 7, 12, 43, 127, 543, 2304, 8720, 15935, 7434, 316, 1, 1, 2, 3, 7, 12, 43, 127, 544, 2356, 11023, 38365, 58509, 20441, 596, 1]