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.

A328454 Numbers k such that k![4] - 4 is prime, where k![4] = A007662(k) = quadruple factorial.

Table of values

n a(n)
1 7
2 9
3 11
4 15
5 17
6 19
7 39
8 45
9 57
10 59
11 63
12 69
13 81
14 85
15 127
16 141
17 149
18 153
19 163
20 165
21 201
22 235
23 259
24 377
25 457
26 649
27 815
28 897
29 1057
30 1433
31 1453
32 1519
33 1759
34 3047
35 3561
36 4151
37 7025
38 11917
39 11971
40 15295
41 18919
42 19449
43 20765
44 70385
45 71293

List of values

[7, 9, 11, 15, 17, 19, 39, 45, 57, 59, 63, 69, 81, 85, 127, 141, 149, 153, 163, 165, 201, 235, 259, 377, 457, 649, 815, 897, 1057, 1433, 1453, 1519, 1759, 3047, 3561, 4151, 7025, 11917, 11971, 15295, 18919, 19449, 20765, 70385, 71293]

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

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