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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.

A300756 Triangle T(n,k) read by rows: number of squarefree graphs on n nodes with k components.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 2
8 1
9 1
10 0
11 3
12 3
13 1
14 1
15 0
16 8
17 5
18 3
19 1
20 1
21 0
22 19
23 14
24 6
25 3
26 1
27 1
28 0
29 57
30 33
31 16
32 6
33 3
34 1
35 1
36 0
37 186
38 98
39 39
40 17
41 6
42 3
43 1
44 1
45 0
46 740
47 305
48 116
49 41
50 17
51 6
52 3
53 1
54 1
55 0
56 3389
57 1133
58 355
59 122
60 42
61 17
62 6
63 3
64 1
65 1
66 0
67 18502
68 4824
69 1288
70 373
71 124
72 42
73 17
74 6
75 3
76 1
77 1
78 0
79 120221
80 24575
81 5332
82 1343

List of values

[1, 0, 1, 0, 1, 1, 0, 2, 1, 1, 0, 3, 3, 1, 1, 0, 8, 5, 3, 1, 1, 0, 19, 14, 6, 3, 1, 1, 0, 57, 33, 16, 6, 3, 1, 1, 0, 186, 98, 39, 17, 6, 3, 1, 1, 0, 740, 305, 116, 41, 17, 6, 3, 1, 1, 0, 3389, 1133, 355, 122, 42, 17, 6, 3, 1, 1, 0, 18502, 4824, 1288, 373, 124, 42, 17, 6, 3, 1, 1, 0, 120221, 24575, 5332, 1343]