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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.

A317321 Multiples of 21 and odd numbers interleaved.

Table of values

n a(n)
0 0
1 1
2 21
3 3
4 42
5 5
6 63
7 7
8 84
9 9
10 105
11 11
12 126
13 13
14 147
15 15
16 168
17 17
18 189
19 19
20 210
21 21
22 231
23 23
24 252
25 25
26 273
27 27
28 294
29 29
30 315
31 31
32 336
33 33
34 357
35 35
36 378
37 37
38 399
39 39
40 420
41 41
42 441
43 43
44 462
45 45
46 483
47 47
48 504
49 49
50 525
51 51
52 546
53 53
54 567
55 55
56 588
57 57
58 609
59 59
60 630
61 61
62 651
63 63
64 672
65 65
66 693
67 67
68 714
69 69

List of values

[0, 1, 21, 3, 42, 5, 63, 7, 84, 9, 105, 11, 126, 13, 147, 15, 168, 17, 189, 19, 210, 21, 231, 23, 252, 25, 273, 27, 294, 29, 315, 31, 336, 33, 357, 35, 378, 37, 399, 39, 420, 41, 441, 43, 462, 45, 483, 47, 504, 49, 525, 51, 546, 53, 567, 55, 588, 57, 609, 59, 630, 61, 651, 63, 672, 65, 693, 67, 714, 69]

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

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