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.

A270667 Nonprime and squarefree Löschian numbers (A003136).

Table of values

n a(n)
1 1
2 21
3 39
4 57
5 91
6 93
7 111
8 129
9 133
10 183
11 201
12 217
13 219
14 237
15 247
16 259
17 273
18 291
19 301
20 309
21 327
22 381
23 399
24 403
25 417
26 427
27 453
28 469
29 471
30 481
31 489
32 511
33 543
34 553
35 559
36 579
37 589
38 597
39 633
40 651
41 669
42 679
43 687
44 703
45 721
46 723
47 741
48 763
49 777
50 793
51 813
52 817
53 831
54 849
55 871
56 889
57 903
58 921
59 939
60 949
61 973
62 993

List of values

[1, 21, 39, 57, 91, 93, 111, 129, 133, 183, 201, 217, 219, 237, 247, 259, 273, 291, 301, 309, 327, 381, 399, 403, 417, 427, 453, 469, 471, 481, 489, 511, 543, 553, 559, 579, 589, 597, 633, 651, 669, 679, 687, 703, 721, 723, 741, 763, 777, 793, 813, 817, 831, 849, 871, 889, 903, 921, 939, 949, 973, 993]

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

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