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.

A180918 'DPE(n,k)' triangle read by rows. DPE(n,k) is the number of k-double-palindromes of n up to cyclic equivalence.

Table of values

n a(n)
1 0
2 0
3 1
4 0
5 1
6 1
7 0
8 2
9 1
10 1
11 0
12 2
13 2
14 1
15 1
16 0
17 3
18 2
19 3
20 1
21 1
22 0
23 3
24 3
25 3
26 3
27 1
28 1
29 0
30 4
31 3
32 6
33 3
34 4
35 1
36 1
37 0
38 4
39 4
40 6
41 6
42 4
43 4
44 1
45 1
46 0
47 5
48 4
49 10
50 6
51 10
52 4
53 5
54 1
55 1
56 0
57 5
58 5
59 10
60 10
61 10
62 10
63 5
64 5
65 1
66 1
67 0
68 6
69 5
70 15
71 10
72 20
73 10
74 15
75 5
76 6
77 1
78 1
79 0
80 6
81 6
82 15
83 15
84 20
85 20
86 15
87 15
88 6
89 6
90 1
91 1

List of values

[0, 0, 1, 0, 1, 1, 0, 2, 1, 1, 0, 2, 2, 1, 1, 0, 3, 2, 3, 1, 1, 0, 3, 3, 3, 3, 1, 1, 0, 4, 3, 6, 3, 4, 1, 1, 0, 4, 4, 6, 6, 4, 4, 1, 1, 0, 5, 4, 10, 6, 10, 4, 5, 1, 1, 0, 5, 5, 10, 10, 10, 10, 5, 5, 1, 1, 0, 6, 5, 15, 10, 20, 10, 15, 5, 6, 1, 1, 0, 6, 6, 15, 15, 20, 20, 15, 15, 6, 6, 1, 1]