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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.

A328932 Number of primes that are a concatenation of two positive integers whose sum is prime(n).

Table of values

n a(n)
1 1
2 0
3 2
4 2
5 4
6 3
7 2
8 6
9 5
10 9
11 6
12 7
13 10
14 11
15 12
16 14
17 12
18 16
19 14
20 17
21 12
22 15
23 16
24 20
25 19
26 19
27 20
28 17
29 23
30 23
31 18
32 27
33 28
34 24
35 30
36 25
37 26
38 26
39 28
40 30
41 27
42 30
43 32
44 27
45 25
46 27
47 37
48 42
49 38
50 32
51 32
52 33
53 30
54 39
55 38
56 36
57 43
58 38
59 43
60 42
61 36
62 36
63 47
64 47
65 49
66 38
67 45
68 48
69 51
70 50

List of values

[1, 0, 2, 2, 4, 3, 2, 6, 5, 9, 6, 7, 10, 11, 12, 14, 12, 16, 14, 17, 12, 15, 16, 20, 19, 19, 20, 17, 23, 23, 18, 27, 28, 24, 30, 25, 26, 26, 28, 30, 27, 30, 32, 27, 25, 27, 37, 42, 38, 32, 32, 33, 30, 39, 38, 36, 43, 38, 43, 42, 36, 36, 47, 47, 49, 38, 45, 48, 51, 50]

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

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