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.

A344020 A sequence of prime numbers: a(1)=2, a(n+1) is the least prime dividing Product_{i in S} a(i)^2 + Product_{i not in S} a(i)^2, minimized over all subsets S of {1..n}.

Table of values

n a(n)
1 2
2 5
3 29
4 17
5 41
6 13
7 37
8 53
9 61
10 97
11 101
12 73
13 89
14 109
15 149
16 137
17 113
18 173
19 181
20 157
21 229
22 197
23 241
24 257
25 233
26 193
27 277
28 269
29 349
30 317
31 337
32 293
33 281
34 313
35 353
36 373
37 389
38 409
39 421
40 397
41 457
42 461
43 401
44 433
45 521
46 509
47 449
48 541
49 569
50 557
51 701
52 593
53 613
54 653
55 641
56 617
57 577
58 661
59 673
60 709
61 677
62 601
63 761
64 733
65 757
66 769
67 773
68 797

List of values

[2, 5, 29, 17, 41, 13, 37, 53, 61, 97, 101, 73, 89, 109, 149, 137, 113, 173, 181, 157, 229, 197, 241, 257, 233, 193, 277, 269, 349, 317, 337, 293, 281, 313, 353, 373, 389, 409, 421, 397, 457, 461, 401, 433, 521, 509, 449, 541, 569, 557, 701, 593, 613, 653, 641, 617, 577, 661, 673, 709, 677, 601, 761, 733, 757, 769, 773, 797]