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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.

A346203 a(n) is the smallest nonnegative number k such that the decimal expansion of the product of the first k primes contains the string n.

Table of values

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

List of values

[3, 0, 1, 3, 10, 7, 2, 9, 9, 8, 4, 18, 17, 11, 15, 16, 14, 18, 24, 16, 11, 4, 9, 5, 21, 13, 13, 13, 9, 21, 3, 5, 10, 14, 12, 13, 26, 24, 12, 17, 18, 15, 12, 26, 16, 22, 10, 16, 12, 11, 13, 7, 13, 20, 17, 19, 11, 20, 15, 18, 11, 14, 21, 13, 10, 24, 20, 14, 21, 8, 9]

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

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