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) |
---|---|
1 | 0 |
2 | 1 |
3 | 4 |
4 | 36 |
5 | 272 |
6 | 4400 |
7 | 51012 |
8 | 1188544 |
9 | 18640960 |
10 | 567108864 |
11 | 11225320100 |
12 | 421504185344 |
13 | 10079828372880 |
14 | 450353989316608 |
15 | 12627774819845668 |
16 | 654244800082329600 |
17 | 21046391759976988928 |
18 | 1240529732459024678912 |
19 | 45032132922921758270916 |
20 | 2975557672677668838178816 |