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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.

A212639 Number of prime factors of A181800(n) (n-th powerful number that is the first integer of its prime signature), counted with multiplicity.

Table of values

n a(n)
1 0
2 2
3 3
4 4
5 5
6 4
7 6
8 5
9 7
10 6
11 6
12 8
13 7
14 7
15 9
16 8
17 8
18 6
19 10
20 9
21 8
22 9
23 7
24 11
25 10
26 9
27 10
28 8
29 12
30 11
31 10
32 8
33 11
34 9
35 10
36 13
37 12
38 11
39 9
40 12
41 10
42 11
43 14
44 13
45 12
46 10
47 9
48 13
49 11
50 12
51 10
52 15
53 14
54 13
55 11
56 8
57 12
58 10
59 14
60 12
61 13
62 11
63 16
64 15
65 14
66 12
67 9
68 13
69 11
70 15
71 13
72 14
73 12

List of values

[0, 2, 3, 4, 5, 4, 6, 5, 7, 6, 6, 8, 7, 7, 9, 8, 8, 6, 10, 9, 8, 9, 7, 11, 10, 9, 10, 8, 12, 11, 10, 8, 11, 9, 10, 13, 12, 11, 9, 12, 10, 11, 14, 13, 12, 10, 9, 13, 11, 12, 10, 15, 14, 13, 11, 8, 12, 10, 14, 12, 13, 11, 16, 15, 14, 12, 9, 13, 11, 15, 13, 14, 12]

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