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.

A268732 Sum of the numbers of divisors of gcd(x,y) with x*y <= n.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 11
6 15
7 17
8 23
9 27
10 31
11 33
12 41
13 43
14 47
15 51
16 60
17 62
18 70
19 72
20 80
21 84
22 88
23 90
24 102
25 106
26 110
27 116
28 124
29 126
30 134
31 136
32 148
33 152
34 156
35 160
36 176
37 178
38 182
39 186
40 198
41 200
42 208
43 210
44 218
45 226
46 230
47 232
48 250
49 254
50 262
51 266
52 274
53 276
54 288
55 292
56 304
57 308
58 312
59 314
60 330

List of values

[1, 3, 5, 9, 11, 15, 17, 23, 27, 31, 33, 41, 43, 47, 51, 60, 62, 70, 72, 80, 84, 88, 90, 102, 106, 110, 116, 124, 126, 134, 136, 148, 152, 156, 160, 176, 178, 182, 186, 198, 200, 208, 210, 218, 226, 230, 232, 250, 254, 262, 266, 274, 276, 288, 292, 304, 308, 312, 314, 330]

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

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