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.

A378186 With p(n) = A002145(n) = n-th non-Pythagorean prime, a(n) is the least k such p(n) + k is a non-Pythagorean prime and 2 p(n) + k - 5 is a Pythagorean prime; and a(n) = 0 if there is no such k .

Table of values

n a(n)
1 4
2 4
3 12
4 4
5 20
6 16
7 16
8 12
9 24
10 64
11 12
12 4
13 20
14 28
15 20
16 64
17 20
18 40
19 16
20 16
21 24
22 20
23 20
24 28
25 16
26 16
27 12
28 68
29 12
30 20
31 40
32 100
33 4
34 36
35 16
36 12
37 20
38 100
39 4
40 36
41 20
42 72
43 4
44 48
45 16
46 12
47 24
48 100
49 32
50 4
51 20
52 76
53 40
54 8
55 16
56 12
57 8
58 40
59 64
60 196
61 16
62 12
63 60
64 68
65 52
66 20

List of values

[4, 4, 12, 4, 20, 16, 16, 12, 24, 64, 12, 4, 20, 28, 20, 64, 20, 40, 16, 16, 24, 20, 20, 28, 16, 16, 12, 68, 12, 20, 40, 100, 4, 36, 16, 12, 20, 100, 4, 36, 20, 72, 4, 48, 16, 12, 24, 100, 32, 4, 20, 76, 40, 8, 16, 12, 8, 40, 64, 196, 16, 12, 60, 68, 52, 20]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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