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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.

A247617 a(4n) = n + 1/2 - (-1)^n/2 + (-1)^n, a(2n+1) = 2*n + 5, a(4n+2) = 2*n + 3.

Table of values

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

List of values

[1, 5, 3, 7, 1, 9, 5, 11, 3, 13, 7, 15, 3, 17, 9, 19, 5, 21, 11, 23, 5, 25, 13, 27, 7, 29, 15, 31, 7, 33, 17, 35, 9, 37, 19, 39, 9, 41, 21, 43, 11, 45, 23, 47, 11, 49, 25, 51, 13, 53, 27, 55, 13, 57, 29, 59, 15, 61, 31, 63, 15, 65, 33, 67]

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

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