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.

A141553 Transformed nonprime products of prime factors of the composites, the largest prime decremented by 2 and the smallest prime incremented by 1.

Table of values

n a(n)
1 0
2 0
3 4
4 9
5 6
6 15
7 12
8 0
9 9
10 18
11 20
12 27
13 12
14 18
15 33
16 12
17 30
18 27
19 0
20 36
21 45
22 30
23 18
24 51
25 44
26 36
27 45
28 54
29 36
30 63
31 24
32 40
33 45
34 60
35 66
36 27
37 54
38 60
39 68
40 81
41 54
42 87
43 60
44 0
45 66
46 81
47 90
48 84
49 75
50 36
51 105
52 60
53 102
54 72
55 99
56 72
57 36
58 117
59 90
60 90
61 123
62 108
63 108
64 81
65 88
66 126
67 116
68 135
69 102
70 48

List of values

[0, 0, 4, 9, 6, 15, 12, 0, 9, 18, 20, 27, 12, 18, 33, 12, 30, 27, 0, 36, 45, 30, 18, 51, 44, 36, 45, 54, 36, 63, 24, 40, 45, 60, 66, 27, 54, 60, 68, 81, 54, 87, 60, 0, 66, 81, 90, 84, 75, 36, 105, 60, 102, 72, 99, 72, 36, 117, 90, 90, 123, 108, 108, 81, 88, 126, 116, 135, 102, 48]

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

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