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.

A198327 Semiprimes k such that k-2 is also a semiprime.

Table of values

n a(n)
1 6
2 35
3 51
4 57
5 87
6 93
7 95
8 121
9 123
10 143
11 145
12 161
13 185
14 187
15 203
16 205
17 215
18 217
19 219
20 221
21 237
22 249
23 267
24 289
25 291
26 301
27 303
28 305
29 321
30 323
31 329
32 341
33 393
34 395
35 413
36 415
37 417
38 447
39 453
40 471
41 473
42 517
43 519
44 529
45 535
46 537
47 545
48 553
49 581
50 583
51 591
52 635
53 669
54 671

List of values

[6, 35, 51, 57, 87, 93, 95, 121, 123, 143, 145, 161, 185, 187, 203, 205, 215, 217, 219, 221, 237, 249, 267, 289, 291, 301, 303, 305, 321, 323, 329, 341, 393, 395, 413, 415, 417, 447, 453, 471, 473, 517, 519, 529, 535, 537, 545, 553, 581, 583, 591, 635, 669, 671]