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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.

A117571 Expansion of (1+2*x^2)/((1-x)*(1-x^3)).

Table of values

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

List of values

[1, 1, 3, 4, 4, 6, 7, 7, 9, 10, 10, 12, 13, 13, 15, 16, 16, 18, 19, 19, 21, 22, 22, 24, 25, 25, 27, 28, 28, 30, 31, 31, 33, 34, 34, 36, 37, 37, 39, 40, 40, 42, 43, 43, 45, 46, 46, 48, 49, 49, 51, 52, 52, 54, 55, 55, 57, 58, 58, 60, 61, 61, 63, 64, 64, 66, 67, 67, 69, 70, 70, 72]

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

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