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.

A089965 Both n + 1 and n/2 + 1 are primes.

Table of values

n a(n)
1 2
2 4
3 12
4 36
5 60
6 72
7 156
8 192
9 276
10 312
11 396
12 420
13 456
14 540
15 612
16 660
17 672
18 732
19 756
20 876
21 996
22 1092
23 1152
24 1200
25 1212
26 1236
27 1320
28 1380
29 1452
30 1620
31 1656
32 1752
33 1872
34 1932
35 1992
36 2016
37 2136
38 2340
39 2472
40 2556
41 2592
42 2796
43 2856
44 2916
45 3060
46 3216
47 3252

List of values

[2, 4, 12, 36, 60, 72, 156, 192, 276, 312, 396, 420, 456, 540, 612, 660, 672, 732, 756, 876, 996, 1092, 1152, 1200, 1212, 1236, 1320, 1380, 1452, 1620, 1656, 1752, 1872, 1932, 1992, 2016, 2136, 2340, 2472, 2556, 2592, 2796, 2856, 2916, 3060, 3216, 3252]

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

Content is available under The OEIS End-User License Agreement.