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.

A072389 Numbers of the form x*(x+1) * y*(y+1) ("bipronics") with x and y nonnegative integers.

Table of values

n a(n)
1 0
2 4
3 12
4 24
5 36
6 40
7 60
8 72
9 84
10 112
11 120
12 144
13 180
14 220
15 240
16 252
17 264
18 312
19 336
20 360
21 364
22 400
23 420
24 432
25 480
26 504
27 540
28 544
29 600
30 612
31 660
32 672
33 684
34 760
35 792
36 840
37 864
38 900
39 924
40 936
41 1012
42 1080
43 1092
44 1104
45 1120
46 1200
47 1260
48 1300
49 1320

List of values

[0, 4, 12, 24, 36, 40, 60, 72, 84, 112, 120, 144, 180, 220, 240, 252, 264, 312, 336, 360, 364, 400, 420, 432, 480, 504, 540, 544, 600, 612, 660, 672, 684, 760, 792, 840, 864, 900, 924, 936, 1012, 1080, 1092, 1104, 1120, 1200, 1260, 1300, 1320]