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.

A089001 Numbers n such that 2*n^2 + 1 is prime.

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 21
6 24
7 27
8 30
9 33
10 36
11 42
12 45
13 66
14 72
15 75
16 87
17 93
18 96
19 99
20 102
21 105
22 123
23 132
24 135
25 153
26 156
27 162
28 177
29 186
30 189
31 201
32 204
33 219
34 228
35 237
36 240
37 255
38 264
39 273
40 285
41 297
42 300
43 306
44 321
45 324
46 327
47 351
48 357
49 360
50 366
51 375
52 387
53 393
54 399
55 405
56 417
57 423

List of values

[1, 3, 6, 9, 21, 24, 27, 30, 33, 36, 42, 45, 66, 72, 75, 87, 93, 96, 99, 102, 105, 123, 132, 135, 153, 156, 162, 177, 186, 189, 201, 204, 219, 228, 237, 240, 255, 264, 273, 285, 297, 300, 306, 321, 324, 327, 351, 357, 360, 366, 375, 387, 393, 399, 405, 417, 423]