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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.

A287748 If A070281(n) is not 0, then a(n) is index of the starting primes for form A070281(n), or a(n) = 0 if A070281(n) = 0.

Table of values

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

List of values

[1, 2, 3, 2, 3, 2, 7, 0, 2, 0, 3, 2, 10, 2, 2, 0, 2, 0, 5, 0, 4, 0, 4, 0, 3, 0, 4, 0, 6, 0, 6, 0, 4, 0, 3, 0, 3, 0, 6, 0, 4, 0, 4, 0, 4, 0, 4, 0, 5, 0, 7, 0, 2, 0, 2, 0, 25, 0, 10, 2, 2, 0, 6, 2, 2, 0, 8, 0, 8, 0, 2, 0, 3, 0, 2, 0, 9, 0, 4, 0, 5, 0, 16, 0, 11]

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