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.

A382049 Numbers k such that k +- 2 and k +- 3 are all semiprimes.

Table of values

n a(n)
1 12
2 36
3 216
4 540
5 1044
6 4284
7 6336
8 11304
9 17640
10 30276
11 31284
12 34056
13 35496
14 35820
15 37836
16 41796
17 46080
18 47664
19 50940
20 57240
21 62244
22 71064
23 75096
24 80856
25 84924
26 98820
27 100044
28 103536
29 106344
30 143100
31 143424
32 144936
33 149220
34 159264
35 159804
36 162036
37 168120
38 172584
39 175176
40 177624
41 194760
42 195300

List of values

[12, 36, 216, 540, 1044, 4284, 6336, 11304, 17640, 30276, 31284, 34056, 35496, 35820, 37836, 41796, 46080, 47664, 50940, 57240, 62244, 71064, 75096, 80856, 84924, 98820, 100044, 103536, 106344, 143100, 143424, 144936, 149220, 159264, 159804, 162036, 168120, 172584, 175176, 177624, 194760, 195300]

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

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