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.

A271319 Number of distinct prime factors of the n-th n-gonal number (A060354).

Table of values

n a(n)
2 1
3 2
4 1
5 2
6 3
7 2
8 2
9 2
10 3
11 3
12 3
13 2
14 3
15 4
16 2
17 2
18 3
19 4
20 3
21 3
22 3
23 3
24 3
25 2
26 4
27 3
28 3
29 2
30 5
31 3
32 2
33 4
34 3
35 4
36 3
37 2
38 4
39 4
40 4
41 3
42 4
43 3
44 3
45 3
46 3
47 4
48 3
49 2
50 4
51 4
52 4
53 2
54 4
55 4
56 3
57 4
58 3
59 3
60 4
61 4
62 3
63 5
64 2
65 3
66 4
67 4
68 4
69 4
70 4
71 3
72 4
73 2
74 4
75 5
76 3
77 3
78 4
79 3
80 4
81 3
82 4
83 4
84 5
85 4
86 3
87 4

List of values

[1, 2, 1, 2, 3, 2, 2, 2, 3, 3, 3, 2, 3, 4, 2, 2, 3, 4, 3, 3, 3, 3, 3, 2, 4, 3, 3, 2, 5, 3, 2, 4, 3, 4, 3, 2, 4, 4, 4, 3, 4, 3, 3, 3, 3, 4, 3, 2, 4, 4, 4, 2, 4, 4, 3, 4, 3, 3, 4, 4, 3, 5, 2, 3, 4, 4, 4, 4, 4, 3, 4, 2, 4, 5, 3, 3, 4, 3, 4, 3, 4, 4, 5, 4, 3, 4]