cp's OEIS Frontend

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.

A137753 First denominator and then numerator (left to right) of Leibniz's harmonic-like triangle.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 2
6 1
7 3
8 1
9 6
10 5
11 3
12 1
13 4
14 1
15 12
16 7
17 12
18 7
19 4
20 1
21 5
22 1
23 20
24 9
25 30
26 31
27 20
28 9
29 5
30 1
31 6
32 1
33 30
34 11
35 60
36 49
37 60
38 49
39 30
40 11
41 6
42 1
43 7
44 1
45 42
46 13
47 105
48 71
49 140
50 209
51 105
52 71
53 42
54 13
55 7
56 1
57 8
58 1
59 56
60 15
61 168
62 97
63 280
64 351
65 280
66 351
67 168
68 97

List of values

[1, 1, 2, 1, 2, 1, 3, 1, 6, 5, 3, 1, 4, 1, 12, 7, 12, 7, 4, 1, 5, 1, 20, 9, 30, 31, 20, 9, 5, 1, 6, 1, 30, 11, 60, 49, 60, 49, 30, 11, 6, 1, 7, 1, 42, 13, 105, 71, 140, 209, 105, 71, 42, 13, 7, 1, 8, 1, 56, 15, 168, 97, 280, 351, 280, 351, 168, 97]

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

Content is available under The OEIS End-User License Agreement.