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.

A375031 Numbers whose prime factorization has at least one exponent that equals 2 and no higher even exponent.

Table of values

n a(n)
1 4
2 9
3 12
4 18
5 20
6 25
7 28
8 36
9 44
10 45
11 49
12 50
13 52
14 60
15 63
16 68
17 72
18 75
19 76
20 84
21 90
22 92
23 98
24 99
25 100
26 108
27 116
28 117
29 121
30 124
31 126
32 132
33 140
34 147
35 148
36 150
37 153
38 156
39 164
40 169
41 171
42 172
43 175
44 180
45 188
46 196
47 198
48 200
49 204
50 207
51 212
52 220
53 225
54 228
55 234
56 236
57 242
58 244
59 245

List of values

[4, 9, 12, 18, 20, 25, 28, 36, 44, 45, 49, 50, 52, 60, 63, 68, 72, 75, 76, 84, 90, 92, 98, 99, 100, 108, 116, 117, 121, 124, 126, 132, 140, 147, 148, 150, 153, 156, 164, 169, 171, 172, 175, 180, 188, 196, 198, 200, 204, 207, 212, 220, 225, 228, 234, 236, 242, 244, 245]

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

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