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.

A286567 Smallest prime factor of the n-th Jacobsthal number: a(n) = A020639(A001045(n)), with a(1)=a(2)=1.

Table of values

n a(n)
1 1
2 1
3 3
4 5
5 11
6 3
7 43
8 5
9 3
10 11
11 683
12 3
13 2731
14 43
15 3
16 5
17 43691
18 3
19 174763
20 5
21 3
22 23
23 2796203
24 3
25 11
26 2731
27 3
28 5
29 59
30 3
31 715827883
32 5
33 3
34 43691
35 11
36 3
37 1777
38 174763
39 3
40 5
41 83
42 3
43 2932031007403
44 5
45 3
46 47
47 283
48 3
49 43
50 11
51 3
52 5
53 107
54 3
55 11
56 5
57 3
58 59
59 2833
60 3
61 768614336404564651
62 715827883
63 3
64 5
65 11
66 3
67 7327657
68 5
69 3
70 11
71 56409643
72 3
73 1753
74 223
75 3
76 5
77 43
78 3

List of values

[1, 1, 3, 5, 11, 3, 43, 5, 3, 11, 683, 3, 2731, 43, 3, 5, 43691, 3, 174763, 5, 3, 23, 2796203, 3, 11, 2731, 3, 5, 59, 3, 715827883, 5, 3, 43691, 11, 3, 1777, 174763, 3, 5, 83, 3, 2932031007403, 5, 3, 47, 283, 3, 43, 11, 3, 5, 107, 3, 11, 5, 3, 59, 2833, 3, 768614336404564651, 715827883, 3, 5, 11, 3, 7327657, 5, 3, 11, 56409643, 3, 1753, 223, 3, 5, 43, 3]