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 | 66 |
| 2 | 168 |
| 3 | 441 |
| 4 | 1137 |
| 5 | 2907 |
| 6 | 7498 |
| 7 | 19338 |
| 8 | 49698 |
| 9 | 127871 |
| 10 | 329325 |
| 11 | 847491 |
| 12 | 2180700 |
| 13 | 5613144 |
| 14 | 14447250 |
| 15 | 37180603 |
| 16 | 95692059 |
| 17 | 246288681 |
| 18 | 633868172 |
| 19 | 1631378124 |
| 20 | 4198705332 |
| 21 | 10806224445 |
| 22 | 27811942767 |
| 23 | 71579710341 |
| 24 | 184225016494 |