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 | 3 |
| 2 | 10 |
| 3 | 51 |
| 4 | 189 |
| 5 | 227 |
| 6 | 356 |
| 7 | 578 |
| 8 | 677 |
| 9 | 996 |
| 10 | 3389 |
| 11 | 38997 |
| 12 | 69096 |
| 13 | 149462 |
| 14 | 2208495 |
| 15 | 3459604 |
| 16 | 4952236 |
| 17 | 6710605 |
| 18 | 48098656 |
| 19 | 81762222 |
| 20 | 419495413 |