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 | 1 |
1 | -4 |
2 | 0 |
3 | 12 |
4 | 108 |
5 | 1104 |
6 | 14136 |
7 | 225768 |
8 | 4386168 |
9 | 100885248 |
10 | 2683789344 |
11 | 81047258208 |
12 | 2737919298528 |
13 | 102266990392896 |
14 | 4184016413001408 |
15 | 186047367206499072 |
16 | 8933002185371731200 |
17 | 460580247564830138880 |
18 | 25378595790818821816320 |
19 | 1488230641037882346324480 |