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.

A339840 Numbers that cannot be factored into distinct primes or semiprimes.

Table of values

n a(n)
1 16
2 32
3 64
4 81
5 96
6 128
7 160
8 192
9 224
10 243
11 256
12 288
13 320
14 352
15 384
16 416
17 448
18 486
19 512
20 544
21 576
22 608
23 625
24 640
25 704
26 729
27 736
28 768
29 800
30 832
31 864
32 896
33 928
34 960
35 972
36 992
37 1024
38 1088
39 1152
40 1184
41 1215
42 1216
43 1280
44 1312
45 1344
46 1376
47 1408
48 1458
49 1472
50 1504

List of values

[16, 32, 64, 81, 96, 128, 160, 192, 224, 243, 256, 288, 320, 352, 384, 416, 448, 486, 512, 544, 576, 608, 625, 640, 704, 729, 736, 768, 800, 832, 864, 896, 928, 960, 972, 992, 1024, 1088, 1152, 1184, 1215, 1216, 1280, 1312, 1344, 1376, 1408, 1458, 1472, 1504]

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

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