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.

A094897 If 4*n+1 is not prime and 4*n+3 is prime then a(n)=4*n+3, else a(n)=0.

Table of values

n a(n)
0 3
1 0
2 11
3 0
4 0
5 23
6 0
7 0
8 0
9 0
10 0
11 47
12 0
13 0
14 59
15 0
16 67
17 71
18 0
19 79
20 83
21 0
22 0
23 0
24 0
25 0
26 107
27 0
28 0
29 0
30 0
31 127
32 131
33 0
34 0
35 0
36 0
37 0
38 0
39 0
40 163
41 167
42 0
43 0
44 179
45 0
46 0
47 191
48 0
49 0
50 0
51 0
52 211
53 0
54 0
55 223
56 227
57 0
58 0
59 239
60 0
61 0
62 251
63 0
64 0
65 263
66 0
67 0
68 0
69 0
70 0
71 0
72 0
73 0
74 0
75 0
76 307
77 311
78 0
79 0
80 0
81 0
82 331
83 0

List of values

[3, 0, 11, 0, 0, 23, 0, 0, 0, 0, 0, 47, 0, 0, 59, 0, 67, 71, 0, 79, 83, 0, 0, 0, 0, 0, 107, 0, 0, 0, 0, 127, 131, 0, 0, 0, 0, 0, 0, 0, 163, 167, 0, 0, 179, 0, 0, 191, 0, 0, 0, 0, 211, 0, 0, 223, 227, 0, 0, 239, 0, 0, 251, 0, 0, 263, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 307, 311, 0, 0, 0, 0, 331, 0]