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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.

A213212 Number of distinct products i*j*k over all triples (i,j,k) with i,j,k >= 0 and i+j+k <= n and gcd(i,j,k) <= 1.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 3
5 5
6 6
7 10
8 12
9 17
10 20
11 26
12 29
13 38
14 44
15 52
16 59
17 72
18 78
19 94
20 104
21 118
22 130
23 149
24 160
25 182
26 198
27 221
28 237
29 263
30 278
31 308
32 330
33 361
34 383
35 416
36 438
37 480
38 509
39 546
40 574
41 620
42 646
43 699
44 734
45 777
46 816
47 872
48 907
49 969
50 1012
51 1071
52 1117
53 1190
54 1233
55 1307
56 1361

List of values

[1, 1, 1, 2, 3, 5, 6, 10, 12, 17, 20, 26, 29, 38, 44, 52, 59, 72, 78, 94, 104, 118, 130, 149, 160, 182, 198, 221, 237, 263, 278, 308, 330, 361, 383, 416, 438, 480, 509, 546, 574, 620, 646, 699, 734, 777, 816, 872, 907, 969, 1012, 1071, 1117, 1190, 1233, 1307, 1361]

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

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