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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.

A049465 Replace each fraction p/q in Farey tree A007305/A007306 with 2p + q.

Table of values

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

List of values

[1, 3, 4, 5, 7, 6, 9, 11, 10, 7, 11, 14, 13, 15, 18, 17, 13, 8, 13, 17, 16, 19, 23, 22, 17, 19, 26, 29, 25, 24, 27, 23, 16, 9, 15, 20, 19, 23, 28, 27, 21, 24, 33, 37, 32, 31, 35, 30, 21, 23, 34, 41, 37, 40, 47, 43, 32, 31, 41, 44, 37, 33, 36, 29, 19, 10, 17, 23, 22]

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

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