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.

A089162 Triangle read by rows formed by the prime factors of Mersenne number 2^prime(n) - 1, n >= 1.

Table of values

n a(n)
1 3
2 7
3 31
4 127
5 23
6 89
7 8191
8 131071
9 524287
10 47
11 178481
12 233
13 1103
14 2089
15 2147483647
16 223
17 616318177
18 13367
19 164511353
20 431
21 9719
22 2099863
23 2351
24 4513
25 13264529
26 6361
27 69431
28 20394401
29 179951
30 3203431780337
31 2305843009213693951
32 193707721
33 761838257287

List of values

[3, 7, 31, 127, 23, 89, 8191, 131071, 524287, 47, 178481, 233, 1103, 2089, 2147483647, 223, 616318177, 13367, 164511353, 431, 9719, 2099863, 2351, 4513, 13264529, 6361, 69431, 20394401, 179951, 3203431780337, 2305843009213693951, 193707721, 761838257287]