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.

A254836 Numbers n expressible as a product of 4 factors in two different ways, n = a*b*c*d = x*y*w*z, with a+b+c+d = x+y+w+z.

Table of values

n a(n)
1 36
2 40
3 48
4 72
5 80
6 90
7 96
8 108
9 120
10 126
11 144
12 160
13 168
14 176
15 180
16 192
17 200
18 216
19 225
20 234
21 240
22 252
23 270
24 280
25 288
26 297
27 300
28 320
29 324
30 336
31 352
32 360
33 378
34 384
35 396
36 400
37 405
38 408
39 420
40 432
41 440
42 448
43 450
44 456
45 468
46 480

List of values

[36, 40, 48, 72, 80, 90, 96, 108, 120, 126, 144, 160, 168, 176, 180, 192, 200, 216, 225, 234, 240, 252, 270, 280, 288, 297, 300, 320, 324, 336, 352, 360, 378, 384, 396, 400, 405, 408, 420, 432, 440, 448, 450, 456, 468, 480]

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

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