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 | 1026 |
| 3 | 61100 |
| 4 | 1169750 |
| 5 | 12044025 |
| 6 | 83384476 |
| 7 | 437200176 |
| 8 | 1864757700 |
| 9 | 6779099625 |
| 10 | 21693441550 |
| 11 | 62545208076 |
| 12 | 165314338826 |
| 13 | 405941961425 |
| 14 | 935824239000 |
| 15 | 2042356907200 |
| 16 | 4248401203176 |
| 17 | 8470439399601 |
| 18 | 16262944822650 |
| 19 | 30186516503500 |
| 20 | 54350088184350 |
| 21 | 95193540843401 |
| 22 | 162596916293876 |
| 23 | 271426802958000 |
| 24 | 443660070587500 |