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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.

A131848 Least nonnegative number which when added to the n-th semiprime gives a multiple of n.

Table of values

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

List of values

[0, 0, 0, 2, 1, 3, 0, 2, 2, 4, 0, 2, 4, 4, 6, 2, 2, 3, 2, 3, 5, 4, 4, 3, 1, 1, 26, 27, 1, 3, 2, 3, 5, 7, 34, 33, 33, 34, 37, 39, 1, 3, 0, 43, 1, 43, 46, 1, 2, 4, 49, 50, 0, 1, 54, 55, 51, 54, 53, 55, 57, 54, 51, 54, 57, 59, 62, 63, 63, 66, 69, 71, 1, 3, 4, 2, 73, 75, 69, 71]

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