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.

A291617 Numbers p_1*p_2*...*p_k such that (2^p_1-1)*(2^p_2-1)*...*(2^p_k-1) is a Poulet number (A001567), where p_i are primes and k >= 2.

Table of values

n a(n)
1 230
2 341
3 1387
4 2047
5 2701
6 3277
7 4033
8 4369
9 4681
10 5461
11 7957
12 8321
13 10261
14 13747
15 14491
16 15709
17 18721
18 19951
19 23377
20 31323
21 31417
22 31609
23 31621
24 35333
25 38193
26 42799
27 49141
28 49981
29 60701
30 60787
31 65077
32 65281
33 80581
34 83333
35 85489

List of values

[230, 341, 1387, 2047, 2701, 3277, 4033, 4369, 4681, 5461, 7957, 8321, 10261, 13747, 14491, 15709, 18721, 19951, 23377, 31323, 31417, 31609, 31621, 35333, 38193, 42799, 49141, 49981, 60701, 60787, 65077, 65281, 80581, 83333, 85489]