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.

A175521 Nonprimes k such that 9*k divides 2^(k-1) - 1.

Table of values

n a(n)
1 1
2 1105
3 1387
4 1729
5 2047
6 2701
7 2821
8 3277
9 4033
10 4369
11 4681
12 5461
13 6601
14 7957
15 8911
16 10261
17 10585
18 11305
19 13741
20 13747
21 13981
22 14491
23 15709
24 15841
25 16705
26 18721
27 19951
28 23377
29 29341
30 30121
31 30889
32 31417
33 31609
34 31621
35 34945
36 39865
37 41041
38 41665
39 42799
40 46657
41 49141
42 49981

List of values

[1, 1105, 1387, 1729, 2047, 2701, 2821, 3277, 4033, 4369, 4681, 5461, 6601, 7957, 8911, 10261, 10585, 11305, 13741, 13747, 13981, 14491, 15709, 15841, 16705, 18721, 19951, 23377, 29341, 30121, 30889, 31417, 31609, 31621, 34945, 39865, 41041, 41665, 42799, 46657, 49141, 49981]