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.

A320894 Numbers with an even number of prime factors (counted with multiplicity) that cannot be factored into distinct squarefree semiprimes.

Table of values

n a(n)
1 4
2 9
3 16
4 24
5 25
6 36
7 40
8 49
9 54
10 56
11 64
12 81
13 88
14 96
15 100
16 104
17 121
18 135
19 136
20 144
21 152
22 160
23 169
24 184
25 189
26 196
27 216
28 224
29 225
30 232
31 240
32 248
33 250
34 256
35 289
36 296
37 297
38 324
39 328
40 336
41 344
42 351
43 352
44 360
45 361
46 375
47 376
48 384
49 400
50 416
51 424
52 441
53 459
54 472
55 484

List of values

[4, 9, 16, 24, 25, 36, 40, 49, 54, 56, 64, 81, 88, 96, 100, 104, 121, 135, 136, 144, 152, 160, 169, 184, 189, 196, 216, 224, 225, 232, 240, 248, 250, 256, 289, 296, 297, 324, 328, 336, 344, 351, 352, 360, 361, 375, 376, 384, 400, 416, 424, 441, 459, 472, 484]

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

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