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.

A161331 First differences of A161330.

Table of values

n a(n)
0 0
1 2
2 6
3 6
4 6
5 18
6 6
7 18
8 18
9 18
10 30
11 18
12 30
13 42
14 6
15 18
16 18
17 30
18 54
19 30
20 78
21 42
22 54
23 78
24 42
25 66
26 78
27 18
28 42
29 42
30 54
31 90
32 66
33 126
34 90
35 90
36 102
37 66
38 78
39 90
40 90
41 90
42 54
43 66
44 114
45 78
46 126
47 126
48 102
49 102
50 138
51 102
52 162
53 102
54 114
55 162
56 126
57 162
58 114
59 102
60 102
61 126
62 186
63 186
64 150
65 138
66 126
67 162
68 162
69 186
70 198
71 114
72 114
73 162

List of values

[0, 2, 6, 6, 6, 18, 6, 18, 18, 18, 30, 18, 30, 42, 6, 18, 18, 30, 54, 30, 78, 42, 54, 78, 42, 66, 78, 18, 42, 42, 54, 90, 66, 126, 90, 90, 102, 66, 78, 90, 90, 90, 54, 66, 114, 78, 126, 126, 102, 102, 138, 102, 162, 102, 114, 162, 126, 162, 114, 102, 102, 126, 186, 186, 150, 138, 126, 162, 162, 186, 198, 114, 114, 162]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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