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.

A272627 Numbers n = pq where p, q are primes congruent to 3 and 7 mod 8, respectively.

Table of values

n a(n)
1 21
2 69
3 77
4 93
5 133
6 141
7 213
8 237
9 253
10 301
11 309
12 341
13 381
14 413
15 437
16 453
17 469
18 501
19 517
20 573
21 581
22 589
23 597
24 669
25 717
26 749
27 781
28 789
29 813
30 869
31 893
32 917
33 933
34 973
35 989
36 1077
37 1101
38 1133
39 1141
40 1149
41 1253
42 1293
43 1317
44 1333
45 1349
46 1357
47 1389
48 1397
49 1437
50 1461

List of values

[21, 69, 77, 93, 133, 141, 213, 237, 253, 301, 309, 341, 381, 413, 437, 453, 469, 501, 517, 573, 581, 589, 597, 669, 717, 749, 781, 789, 813, 869, 893, 917, 933, 973, 989, 1077, 1101, 1133, 1141, 1149, 1253, 1293, 1317, 1333, 1349, 1357, 1389, 1397, 1437, 1461]