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.

A320892 Numbers with an even number of prime factors (counted with multiplicity) that cannot be factored into distinct semiprimes.

Table of values

n a(n)
1 16
2 64
3 81
4 96
5 144
6 160
7 224
8 256
9 324
10 352
11 384
12 400
13 416
14 486
15 544
16 576
17 608
18 625
19 640
20 729
21 736
22 784
23 864
24 896
25 928
26 960
27 992
28 1024
29 1184
30 1215
31 1296
32 1312
33 1344
34 1376
35 1408
36 1440
37 1504
38 1536
39 1600
40 1664
41 1696
42 1701
43 1888
44 1936
45 1944
46 1952
47 2016
48 2025

List of values

[16, 64, 81, 96, 144, 160, 224, 256, 324, 352, 384, 400, 416, 486, 544, 576, 608, 625, 640, 729, 736, 784, 864, 896, 928, 960, 992, 1024, 1184, 1215, 1296, 1312, 1344, 1376, 1408, 1440, 1504, 1536, 1600, 1664, 1696, 1701, 1888, 1936, 1944, 1952, 2016, 2025]

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

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