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 | 9 |
| 1 | 284 |
| 2 | 3004 |
| 3 | 19078 |
| 4 | 88938 |
| 5 | 335612 |
| 6 | 1084387 |
| 7 | 3109060 |
| 8 | 8104089 |
| 9 | 19539904 |
| 10 | 44141520 |
| 11 | 94346102 |
| 12 | 192252586 |
| 13 | 375787005 |
| 14 | 708083995 |
| 15 | 1291443529 |
| 16 | 2287680232 |
| 17 | 3947261426 |
| 18 | 6650353141 |
| 19 | 10963787826 |
| 20 | 17719064134 |
| 21 | 28117822582 |
| 22 | 43872849975 |
| 23 | 67394593662 |
| 24 | 102035462287 |
| 25 | 152406906280 |