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.

A309149 Number of solutions of the Diophantine equation 1/n + 1/x = 1/y + 1/z, where n >= 1, x >= n, y > n and z >= y.

Table of values

n a(n)
1 0
2 3
3 9
4 14
5 22
6 33
7 29
8 44
9 56
10 65
11 50
12 108
13 53
14 101
15 141
16 97
17 64
18 150
19 73
20 216
21 184
22 119
23 81
24 274
25 138
26 141
27 182
28 263
29 101
30 378
31 90
32 222
33 270
34 183
35 375
36 419
37 102
38 185
39 319
40 479
41 121
42 486
43 115
44 394
45 520
46 187
47 118
48 565
49 227
50 362

List of values

[0, 3, 9, 14, 22, 33, 29, 44, 56, 65, 50, 108, 53, 101, 141, 97, 64, 150, 73, 216, 184, 119, 81, 274, 138, 141, 182, 263, 101, 378, 90, 222, 270, 183, 375, 419, 102, 185, 319, 479, 121, 486, 115, 394, 520, 187, 118, 565, 227, 362]