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.

A054415 Smallest prime factor of n!-1 (for n>2), a(2)=1.

Table of values

n a(n)
2 1
3 5
4 23
5 7
6 719
7 5039
8 23
9 11
10 29
11 13
12 479001599
13 1733
14 87178291199
15 17
16 3041
17 19
18 59
19 653
20 124769
21 23
22 109
23 51871
24 625793187653
25 149
26 20431
27 29
28 239
29 31
30 265252859812191058636308479999999
31 787
32 263130836933693530167218012159999999
33 8683317618811886495518194401279999999

List of values

[1, 5, 23, 7, 719, 5039, 23, 11, 29, 13, 479001599, 1733, 87178291199, 17, 3041, 19, 59, 653, 124769, 23, 109, 51871, 625793187653, 149, 20431, 29, 239, 31, 265252859812191058636308479999999, 787, 263130836933693530167218012159999999, 8683317618811886495518194401279999999]

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

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