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.

A324855 Lexicographically earliest sequence containing 2 and all squarefree numbers > 2 whose prime indices already belong to the sequence.

Table of values

n a(n)
1 2
2 3
3 5
4 11
5 15
6 31
7 33
8 47
9 55
10 93
11 127
12 137
13 141
14 155
15 165
16 211
17 235
18 257
19 341
20 381
21 411
22 465
23 487
24 517
25 633
26 635
27 685
28 705
29 709
30 771
31 773
32 811
33 907
34 977
35 1023
36 1055
37 1285
38 1297
39 1397
40 1457
41 1461
42 1483
43 1507
44 1551
45 1621
46 1705
47 1905
48 2055
49 2127
50 2293
51 2319

List of values

[2, 3, 5, 11, 15, 31, 33, 47, 55, 93, 127, 137, 141, 155, 165, 211, 235, 257, 341, 381, 411, 465, 487, 517, 633, 635, 685, 705, 709, 771, 773, 811, 907, 977, 1023, 1055, 1285, 1297, 1397, 1457, 1461, 1483, 1507, 1551, 1621, 1705, 1905, 2055, 2127, 2293, 2319]

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

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