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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.

A049448 Sum of numerator and denominator of fractions in Farey tree A007305/A007306.

Table of values

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

List of values

[1, 2, 3, 4, 5, 5, 7, 8, 7, 6, 9, 11, 10, 11, 13, 12, 9, 7, 11, 14, 13, 15, 18, 17, 13, 14, 19, 21, 18, 17, 19, 16, 11, 8, 13, 17, 16, 19, 23, 22, 17, 19, 26, 29, 25, 24, 27, 23, 16, 17, 25, 30, 27, 29, 34, 31, 23, 22, 29, 31, 26, 23, 25, 20, 13, 9, 15, 20, 19, 23]

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

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