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 | 0 |
| 1 | 60 |
| 2 | 390 |
| 3 | 1450 |
| 4 | 4045 |
| 5 | 9421 |
| 6 | 19361 |
| 7 | 36281 |
| 8 | 63326 |
| 9 | 104466 |
| 10 | 164592 |
| 11 | 249612 |
| 12 | 366547 |
| 13 | 523627 |
| 14 | 730387 |
| 15 | 997763 |
| 16 | 1338188 |
| 17 | 1765688 |
| 18 | 2295978 |
| 19 | 2946558 |
| 20 | 3736809 |
| 21 | 4688089 |
| 22 | 5823829 |
| 23 | 7169629 |
| 24 | 8753354 |
| 25 | 10605230 |
| 26 | 12757940 |
| 27 | 15246720 |
| 28 | 18109455 |
| 29 | 21386775 |