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.
n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 12 |
3 | 56 |
4 | 240 |
5 | 994 |
6 | 4032 |
7 | 16280 |
8 | 65280 |
9 | 261626 |
10 | 1047552 |
11 | 4192266 |
12 | 16773160 |
13 | 67100670 |
14 | 268419048 |
15 | 1073709056 |
16 | 4294901774 |
17 | 17179738108 |
18 | 68719214620 |
19 | 274877382642 |
20 | 1099510579208 |
21 | 4398044413950 |
22 | 17592181850104 |
23 | 70368735789062 |
24 | 281474959933418 |
25 | 1125899873288212 |