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.

A107978 Products of two primes of the form 4n+3 (A002145).

Table of values

n a(n)
1 9
2 21
3 33
4 49
5 57
6 69
7 77
8 93
9 121
10 129
11 133
12 141
13 161
14 177
15 201
16 209
17 213
18 217
19 237
20 249
21 253
22 301
23 309
24 321
25 329
26 341
27 361
28 381
29 393
30 413
31 417
32 437
33 453
34 469
35 473
36 489
37 497
38 501
39 517
40 529
41 537
42 553
43 573
44 581
45 589
46 597
47 633
48 649
49 669
50 681
51 713
52 717
53 721
54 737

List of values

[9, 21, 33, 49, 57, 69, 77, 93, 121, 129, 133, 141, 161, 177, 201, 209, 213, 217, 237, 249, 253, 301, 309, 321, 329, 341, 361, 381, 393, 413, 417, 437, 453, 469, 473, 489, 497, 501, 517, 529, 537, 553, 573, 581, 589, 597, 633, 649, 669, 681, 713, 717, 721, 737]