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.

A215075 T(n,k) = Number of squarefree words of length n in a (k+1)-ary alphabet, with new values 0..k introduced in increasing order.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 2
10 0
11 1
12 1
13 2
14 3
15 0
16 1
17 1
18 2
19 4
20 5
21 0
22 1
23 1
24 2
25 4
26 11
27 7
28 0
29 1
30 1
31 2
32 4
33 12
34 29
35 10
36 0
37 1
38 1
39 2
40 4
41 12
42 39
43 77
44 13
45 0
46 1
47 1
48 2
49 4
50 12
51 40
52 138
53 202
54 18
55 0
56 1
57 1
58 2
59 4
60 12
61 40
62 153
63 503
64 532
65 24
66 0
67 1
68 1
69 2
70 4
71 12
72 40
73 154
74 638
75 1864
76 1395
77 34
78 0
79 1
80 1
81 2
82 4
83 12
84 40
85 154
86 659

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 2, 0, 1, 1, 2, 3, 0, 1, 1, 2, 4, 5, 0, 1, 1, 2, 4, 11, 7, 0, 1, 1, 2, 4, 12, 29, 10, 0, 1, 1, 2, 4, 12, 39, 77, 13, 0, 1, 1, 2, 4, 12, 40, 138, 202, 18, 0, 1, 1, 2, 4, 12, 40, 153, 503, 532, 24, 0, 1, 1, 2, 4, 12, 40, 154, 638, 1864, 1395, 34, 0, 1, 1, 2, 4, 12, 40, 154, 659]