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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.

A380890 Triangle T(n,k) read by rows: the number of graphs with n nodes which are enriched cycles (necklaces) and the elements in the cycle are marked linear chains up to length k.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 2
6 4
7 1
8 3
9 5
10 7
11 1
12 3
13 7
14 9
15 12
16 1
17 5
18 14
19 18
20 21
21 24
22 1
23 5
24 19
25 29
26 35
27 38
28 42
29 1
30 8
31 35
32 56
33 71
34 77
35 81
36 85
37 1
38 10
39 60
40 100
41 133
42 148
43 156
44 160
45 165
46 1
47 15
48 107
49 192
50 264
51 297
52 317
53 325
54 330
55 335
56 1
57 19
58 187
59 361
60 511
61 586
62 630
63 650
64 660
65 665
66 671
67 1
68 31
69 352
70 714
71 1041
72 1206
73 1306
74 1350
75 1375
76 1385
77 1391
78 1397

List of values

[1, 1, 2, 1, 2, 4, 1, 3, 5, 7, 1, 3, 7, 9, 12, 1, 5, 14, 18, 21, 24, 1, 5, 19, 29, 35, 38, 42, 1, 8, 35, 56, 71, 77, 81, 85, 1, 10, 60, 100, 133, 148, 156, 160, 165, 1, 15, 107, 192, 264, 297, 317, 325, 330, 335, 1, 19, 187, 361, 511, 586, 630, 650, 660, 665, 671, 1, 31, 352, 714, 1041, 1206, 1306, 1350, 1375, 1385, 1391, 1397]