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 | 201658 |
| 2 | 563866 |
| 3 | 1213162 |
| 4 | 2229322 |
| 5 | 4627534 |
| 6 | 13593838 |
| 7 | 29982262 |
| 8 | 127004446 |
| 9 | 318134506 |
| 10 | 641966518 |
| 11 | 948880006 |
| 12 | 1340689846 |
| 13 | 1671022954 |
| 14 | 1827766126 |
| 15 | 4241032018 |
| 16 | 6055076206 |
| 17 | 8775783286 |
| 18 | 14009110642 |
| 19 | 19917191062 |
| 20 | 32482037662 |
| 21 | 36682577026 |
| 22 | 43862470342 |
| 23 | 64900170418 |