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.

A143202 Numbers having exactly two distinct prime factors p, q with q = p+2.

Table of values

n a(n)
1 15
2 35
3 45
4 75
5 135
6 143
7 175
8 225
9 245
10 323
11 375
12 405
13 675
14 875
15 899
16 1125
17 1215
18 1225
19 1573
20 1715
21 1763
22 1859
23 1875
24 2025
25 3375
26 3599
27 3645
28 4375
29 5183
30 5491
31 5625
32 6075
33 6125
34 6137
35 8575
36 9375
37 10125
38 10403
39 10935
40 11663
41 12005
42 16875
43 17303
44 18225

List of values

[15, 35, 45, 75, 135, 143, 175, 225, 245, 323, 375, 405, 675, 875, 899, 1125, 1215, 1225, 1573, 1715, 1763, 1859, 1875, 2025, 3375, 3599, 3645, 4375, 5183, 5491, 5625, 6075, 6125, 6137, 8575, 9375, 10125, 10403, 10935, 11663, 12005, 16875, 17303, 18225]

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

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