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.

A128665 Least n-almost prime of the form semiprime + 1.

Table of values

n a(n)
1 5
2 10
3 27
4 16
5 112
6 96
7 288
8 896
9 512
10 1536
11 2048
12 10240
13 12288
14 36864
15 49152
16 98304
17 196608
18 393216
19 1769472
20 1572864
21 3145728
22 6291456
23 8388608
24 41943040
25 50331648
26 234881024
27 201326592
28 905969664
29 805306368
30 6039797760
31 3221225472
32 6442450944
33 19327352832
34 64424509440
35 173946175488
36 257698037760
37 137438953472
38 412316860416
39 1236950581248
40 3848290697216
41 2199023255552
42 10995116277760
43 29686813949952

List of values

[5, 10, 27, 16, 112, 96, 288, 896, 512, 1536, 2048, 10240, 12288, 36864, 49152, 98304, 196608, 393216, 1769472, 1572864, 3145728, 6291456, 8388608, 41943040, 50331648, 234881024, 201326592, 905969664, 805306368, 6039797760, 3221225472, 6442450944, 19327352832, 64424509440, 173946175488, 257698037760, 137438953472, 412316860416, 1236950581248, 3848290697216, 2199023255552, 10995116277760, 29686813949952]

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

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