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.

A137765 Nontrivial numbers of the elements to the right of the central elements in writing first the denominator and then the numerator(left to right) of Leibniz's harmonic-like triangle. That is, the nontrivial elements of A137764.

Table of values

n a(n)
1 2
2 3
3 12
4 7
5 4
6 20
7 9
8 5
9 60
10 49
11 30
12 11
13 6
14 105
15 71
16 42
17 13
18 7
19 280
20 351
21 168
22 97
23 56
24 15
25 8
26 504
27 545
28 252
29 127
30 72
31 17
32 9
33 1260
34 2561
35 840
36 799
37 360
38 161
39 90
40 19
41 10
42 2310
43 4159
44 1320
45 1121
46 495
47 199
48 110
49 21
50 11

List of values

[2, 3, 12, 7, 4, 20, 9, 5, 60, 49, 30, 11, 6, 105, 71, 42, 13, 7, 280, 351, 168, 97, 56, 15, 8, 504, 545, 252, 127, 72, 17, 9, 1260, 2561, 840, 799, 360, 161, 90, 19, 10, 2310, 4159, 1320, 1121, 495, 199, 110, 21, 11]