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 | 1 |
2 | 2 |
3 | 18 |
4 | 144 |
5 | 1660 |
6 | 27480 |
7 | 548394 |
8 | 12402992 |
9 | 316789848 |
10 | 9158652720 |
11 | 296955697390 |
12 | 10666960742328 |
13 | 420121365404052 |
14 | 17973670280757464 |
15 | 828915057583647090 |
16 | 40974375613614916320 |
17 | 2161181874390019883056 |
18 | 121176506157487442355168 |
19 | 7199219738147125437960534 |
20 | 451879288812982893026999720 |
21 | 29885088906978769868636730540 |