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.

A143933 a(n) is the smallest prime x such that x^2-n! is also prime.

Table of values

n a(n)
1 2
2 2
3 3
4 11
5 19
6 31
7 79
8 211
9 607
10 1931
11 6337
12 21961
13 78919
14 295291
15 1143563
16 4574149
17 18859777
18 80014843
19 348776611
20 1559776279
21 7147792903
22 33526120129
23 160785623729
24 787685471519
25 3938427356629
26 20082117944579
27 104349745809137
28 552166953567737

List of values

[2, 2, 3, 11, 19, 31, 79, 211, 607, 1931, 6337, 21961, 78919, 295291, 1143563, 4574149, 18859777, 80014843, 348776611, 1559776279, 7147792903, 33526120129, 160785623729, 787685471519, 3938427356629, 20082117944579, 104349745809137, 552166953567737]

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

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