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.

A175860 a(n) = characteristic function of numbers k such that A175856(m) = k has solution for any m, where A175856(m): a(m) = m for m = noncomposites, a(m) = previous term - 1 for m = composites.

Table of values

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

List of values

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