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.

A180411 Sum of the semiprime divisors (with repetition) of the n-th number with two or more distinct semiprime divisors.

Table of values

n a(n)
1 16
2 21
3 24
4 30
5 32
6 31
7 37
8 42
9 41
10 48
11 39
12 48
13 45
14 56
15 45
16 54
17 51
18 51
19 61
20 72
21 59
22 57
23 55
24 80
25 71
26 64
27 65
28 78
29 61
30 96
31 70
32 77
33 75
34 69
35 91
36 90
37 71
38 67
39 87
40 80
41 101
42 120
43 87
44 75
45 128
46 77
47 101
48 93
49 72
50 114
51 121
52 87
53 81
54 91
55 152
56 81
57 126
58 111
59 113
60 107
61 90
62 78
63 168
64 103
65 93
66 129
67 123
68 176

List of values

[16, 21, 24, 30, 32, 31, 37, 42, 41, 48, 39, 48, 45, 56, 45, 54, 51, 51, 61, 72, 59, 57, 55, 80, 71, 64, 65, 78, 61, 96, 70, 77, 75, 69, 91, 90, 71, 67, 87, 80, 101, 120, 87, 75, 128, 77, 101, 93, 72, 114, 121, 87, 81, 91, 152, 81, 126, 111, 113, 107, 90, 78, 168, 103, 93, 129, 123, 176]

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

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