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 | 9 |
3 | 77 |
4 | 694 |
5 | 6774 |
6 | 71820 |
7 | 826020 |
8 | 10265040 |
9 | 137275920 |
10 | 1967222880 |
11 | 30092580000 |
12 | 489584390400 |
13 | 8443643040000 |
14 | 153903497126400 |
15 | 2956596769728000 |
16 | 59712542813952000 |
17 | 1264947863784192000 |
18 | 28047600771531264000 |
19 | 649672514944814592000 |
20 | 15692497566512836608000 |
21 | 394613964462556016640000 |