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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.

A163830 The n-th composite minus the product of the indices of the primes in its prime factorization.

Table of values

n a(n)
1 3
2 4
3 7
4 5
5 7
6 10
7 10
8 9
9 15
10 14
11 17
12 13
13 17
14 22
15 16
16 20
17 19
18 24
19 24
20 31
21 23
22 27
23 23
24 32
25 30
26 27
27 37
28 34
29 39
30 33
31 37
32 46
33 33
34 41
35 37
36 46
37 46
38 40
39 52
40 41
41 48
42 54
43 51
44 47
45 63
46 47
47 56
48 61
49 51
50 58
51 68
52 62
53 57
54 68
55 57
56 66
57 77
58 65
59 69
60 76
61 64
62 72
63 67
64 83
65 78
66 67
67 83
68 71
69 79
70 71
71 94

List of values

[3, 4, 7, 5, 7, 10, 10, 9, 15, 14, 17, 13, 17, 22, 16, 20, 19, 24, 24, 31, 23, 27, 23, 32, 30, 27, 37, 34, 39, 33, 37, 46, 33, 41, 37, 46, 46, 40, 52, 41, 48, 54, 51, 47, 63, 47, 56, 61, 51, 58, 68, 62, 57, 68, 57, 66, 77, 65, 69, 76, 64, 72, 67, 83, 78, 67, 83, 71, 79, 71, 94]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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