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.

A385821 Numbers k such that ceiling((k^2 + 1)/2) is prime.

Table of values

n a(n)
1 2
2 3
3 5
4 6
5 9
6 11
7 12
8 15
9 18
10 19
11 25
12 29
13 35
14 39
15 42
16 45
17 48
18 49
19 51
20 54
21 59
22 60
23 61
24 65
25 66
26 69
27 71
28 72
29 79
30 84
31 85
32 90
33 95
34 101
35 121
36 131
37 132
38 139
39 141
40 144
41 145
42 150
43 159
44 165
45 169
46 171
47 174
48 175
49 181
50 186
51 192
52 195
53 198
54 199
55 201
56 204
57 205
58 209
59 210
60 219
61 221
62 231
63 245
64 246

List of values

[2, 3, 5, 6, 9, 11, 12, 15, 18, 19, 25, 29, 35, 39, 42, 45, 48, 49, 51, 54, 59, 60, 61, 65, 66, 69, 71, 72, 79, 84, 85, 90, 95, 101, 121, 131, 132, 139, 141, 144, 145, 150, 159, 165, 169, 171, 174, 175, 181, 186, 192, 195, 198, 199, 201, 204, 205, 209, 210, 219, 221, 231, 245, 246]