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 | 20 |
2 | 380 |
3 | 7220 |
4 | 136820 |
5 | 2593100 |
6 | 49121660 |
7 | 930556460 |
8 | 17625825740 |
9 | 333857601020 |
10 | 6323384122580 |
11 | 119767717450100 |
12 | 2268399952520660 |
13 | 42963566150826380 |
14 | 813721674662589980 |
15 | 15411746407417290020 |
16 | 291893918240586194660 |
17 | 5528387235193561980740 |