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 | 2 |
| 2 | 7 |
| 3 | 36 |
| 4 | 283 |
| 5 | 2898 |
| 6 | 36169 |
| 7 | 524976 |
| 8 | 8659186 |
| 9 | 159736316 |
| 10 | 3257811334 |
| 11 | 72797444280 |
| 12 | 1769125982092 |
| 13 | 46466434382032 |
| 14 | 1311960028913384 |
| 15 | 39633438764146568 |
| 16 | 1275742281105759813 |
| 17 | 43593785716301112538 |
| 18 | 1576217593145774955007 |