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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.

A213208 Number of distinct products i*j*k over all triples (i,j,k) with |i| + |j| + |k| <= n and gcd(i,j,k) <= 1.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 5
5 9
6 11
7 19
8 23
9 33
10 39
11 51
12 57
13 75
14 87
15 103
16 117
17 143
18 155
19 187
20 207
21 235
22 259
23 297
24 319
25 363
26 395
27 441
28 473
29 525
30 555
31 615
32 659
33 721
34 765
35 831
36 875
37 959
38 1017
39 1091
40 1147
41 1239
42 1291
43 1397
44 1467
45 1553
46 1631
47 1743
48 1813
49 1937
50 2023
51 2141
52 2233
53 2379
54 2465

List of values

[1, 1, 1, 3, 5, 9, 11, 19, 23, 33, 39, 51, 57, 75, 87, 103, 117, 143, 155, 187, 207, 235, 259, 297, 319, 363, 395, 441, 473, 525, 555, 615, 659, 721, 765, 831, 875, 959, 1017, 1091, 1147, 1239, 1291, 1397, 1467, 1553, 1631, 1743, 1813, 1937, 2023, 2141, 2233, 2379, 2465]

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

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