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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.

A325626 a(n) is the smallest prime factor in A030426(n).

Table of values

n a(n)
2 2
3 5
4 13
5 89
6 233
7 1597
8 37
9 28657
10 514229
11 557
12 73
13 2789
14 433494437
15 2971215073
16 953
17 353
18 4513
19 269
20 6673
21 9375829
22 157
23 99194853094755497
24 1069
25 193
26 743519377
27 519121
28 1247833
29 827728777
30 677
31 27941
32 1066340417491710595814572169
33 19134702400093278081449423917
34 277
35 110557

List of values

[2, 5, 13, 89, 233, 1597, 37, 28657, 514229, 557, 73, 2789, 433494437, 2971215073, 953, 353, 4513, 269, 6673, 9375829, 157, 99194853094755497, 1069, 193, 743519377, 519121, 1247833, 827728777, 677, 27941, 1066340417491710595814572169, 19134702400093278081449423917, 277, 110557]

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

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