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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.

A346274 Number of n-digit primes with digital product = 7.

Table of values

n a(n)
1 1
2 2
3 0
4 2
5 2
6 0
7 3
8 3
9 0
10 2
11 1
12 0
13 1
14 0
15 0
16 0
17 2
18 0
19 3
20 1
21 0
22 3
23 1
24 0
25 2
26 1
27 0
28 2
29 3
30 0
31 2
32 1
33 0
34 2
35 2
36 0
37 3
38 0
39 0
40 3
41 0
42 0
43 2
44 1
45 0
46 3
47 3
48 0
49 4
50 4
51 0
52 1
53 2
54 0
55 4
56 2
57 0
58 1
59 2
60 0
61 1
62 2
63 0
64 3
65 3
66 0
67 2
68 1
69 0
70 2
71 2
72 0
73 1
74 3
75 0
76 0
77 3
78 0
79 1
80 3
81 0
82 2
83 8
84 0
85 1
86 3
87 0

List of values

[1, 2, 0, 2, 2, 0, 3, 3, 0, 2, 1, 0, 1, 0, 0, 0, 2, 0, 3, 1, 0, 3, 1, 0, 2, 1, 0, 2, 3, 0, 2, 1, 0, 2, 2, 0, 3, 0, 0, 3, 0, 0, 2, 1, 0, 3, 3, 0, 4, 4, 0, 1, 2, 0, 4, 2, 0, 1, 2, 0, 1, 2, 0, 3, 3, 0, 2, 1, 0, 2, 2, 0, 1, 3, 0, 0, 3, 0, 1, 3, 0, 2, 8, 0, 1, 3, 0]

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