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 | 60 |
| 2 | 342 |
| 3 | 1175 |
| 4 | 3135 |
| 5 | 7140 |
| 6 | 14560 |
| 7 | 27342 |
| 8 | 48150 |
| 9 | 80520 |
| 10 | 129030 |
| 11 | 199485 |
| 12 | 299117 |
| 13 | 436800 |
| 14 | 623280 |
| 15 | 871420 |
| 16 | 1196460 |
| 17 | 1616292 |
| 18 | 2151750 |
| 19 | 2826915 |
| 20 | 3669435 |
| 21 | 4710860 |
| 22 | 5986992 |
| 23 | 7538250 |
| 24 | 9410050 |
| 25 | 11653200 |
| 26 | 14324310 |
| 27 | 17486217 |
| 28 | 21208425 |
| 29 | 25567560 |