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.

A345452 Positive integers with an even number of prime factors (counting repetitions) that sum to an even number.

Table of values

n a(n)
1 1
2 4
3 9
4 15
5 16
6 21
7 25
8 33
9 35
10 36
11 39
12 49
13 51
14 55
15 57
16 60
17 64
18 65
19 69
20 77
21 81
22 84
23 85
24 87
25 91
26 93
27 95
28 100
29 111
30 115
31 119
32 121
33 123
34 129
35 132
36 133
37 135
38 140
39 141
40 143
41 144
42 145
43 155
44 156
45 159
46 161
47 169
48 177
49 183
50 185
51 187
52 189
53 196
54 201
55 203
56 204
57 205
58 209
59 213
60 215

List of values

[1, 4, 9, 15, 16, 21, 25, 33, 35, 36, 39, 49, 51, 55, 57, 60, 64, 65, 69, 77, 81, 84, 85, 87, 91, 93, 95, 100, 111, 115, 119, 121, 123, 129, 132, 133, 135, 140, 141, 143, 144, 145, 155, 156, 159, 161, 169, 177, 183, 185, 187, 189, 196, 201, 203, 204, 205, 209, 213, 215]

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

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