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.

A101040 If n has one or two prime-factors then 1 else 0.

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 1
6 1
7 1
8 0
9 1
10 1
11 1
12 0
13 1
14 1
15 1
16 0
17 1
18 0
19 1
20 0
21 1
22 1
23 1
24 0
25 1
26 1
27 0
28 0
29 1
30 0
31 1
32 0
33 1
34 1
35 1
36 0
37 1
38 1
39 1
40 0
41 1
42 0
43 1
44 0
45 0
46 1
47 1
48 0
49 1
50 0
51 1
52 0
53 1
54 0
55 1
56 0
57 1
58 1
59 1
60 0
61 1
62 1
63 0
64 0
65 1
66 0
67 1
68 0
69 1
70 0
71 1
72 0
73 1
74 1
75 0
76 0
77 1
78 0
79 1
80 0
81 0
82 1
83 1
84 0
85 1
86 1
87 1
88 0
89 1
90 0
91 1
92 0
93 1
94 1
95 1
96 0
97 1
98 0
99 0
100 0
101 1
102 0
103 1
104 0
105 0

List of values

[0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0]