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.

A213207 Number of distinct products i*j*k over all triples (i,j,k) with |i| + |j| + |k| <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 5
5 9
6 13
7 19
8 25
9 35
10 43
11 55
12 65
13 79
14 91
15 111
16 127
17 149
18 167
19 193
20 217
21 249
22 273
23 311
24 339
25 383
26 419
27 463
28 501
29 551
30 591
31 643
32 693
33 751
34 799
35 869
36 925
37 995
38 1057
39 1133
40 1199
41 1281
42 1347
43 1439
44 1515
45 1615
46 1697
47 1801
48 1883
49 2001
50 2101
51 2219
52 2313

List of values

[1, 1, 1, 3, 5, 9, 13, 19, 25, 35, 43, 55, 65, 79, 91, 111, 127, 149, 167, 193, 217, 249, 273, 311, 339, 383, 419, 463, 501, 551, 591, 643, 693, 751, 799, 869, 925, 995, 1057, 1133, 1199, 1281, 1347, 1439, 1515, 1615, 1697, 1801, 1883, 2001, 2101, 2219, 2313]

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

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