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 | 14 |
| 2 | 104 |
| 3 | 546 |
| 4 | 2274 |
| 5 | 7994 |
| 6 | 24647 |
| 7 | 68392 |
| 8 | 173978 |
| 9 | 411332 |
| 10 | 913445 |
| 11 | 1921218 |
| 12 | 3852849 |
| 13 | 7407596 |
| 14 | 13716315 |
| 15 | 24553998 |
| 16 | 42632552 |
| 17 | 71995170 |
| 18 | 118536730 |
| 19 | 190677578 |
| 20 | 300220648 |
| 21 | 463423974 |
| 22 | 702322075 |
| 23 | 1046330260 |
| 24 | 1534165425 |
| 25 | 2216115226 |
| 26 | 3156684454 |
| 27 | 4437642874 |
| 28 | 6161492611 |
| 29 | 8455365296 |