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.

A105573 Numbers m such that m-4 and m+4 have 4 prime factors.

Table of values

n a(n)
1 20
2 136
3 200
4 224
5 344
6 346
7 368
8 376
9 480
10 488
11 554
12 568
13 576
14 640
15 736
16 744
17 808
18 816
19 854
20 856
21 864
22 872
23 880
24 944
25 992
26 1064
27 1152
28 1160
29 1200
30 1208
31 1214
32 1216
33 1280
34 1288
35 1312
36 1360
37 1426
38 1568
39 1576
40 1606
41 1621
42 1648
43 1656
44 1664
45 1784
46 1808
47 1858

List of values

[20, 136, 200, 224, 344, 346, 368, 376, 480, 488, 554, 568, 576, 640, 736, 744, 808, 816, 854, 856, 864, 872, 880, 944, 992, 1064, 1152, 1160, 1200, 1208, 1214, 1216, 1280, 1288, 1312, 1360, 1426, 1568, 1576, 1606, 1621, 1648, 1656, 1664, 1784, 1808, 1858]

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

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