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 | 18 |
| 2 | 324 |
| 3 | 1350 |
| 4 | 3726 |
| 5 | 8280 |
| 6 | 16038 |
| 7 | 28224 |
| 8 | 46260 |
| 9 | 71766 |
| 10 | 106560 |
| 11 | 152658 |
| 12 | 212274 |
| 13 | 287820 |
| 14 | 381906 |
| 15 | 497340 |
| 16 | 637128 |
| 17 | 804474 |
| 18 | 1002780 |
| 19 | 1235646 |
| 20 | 1506870 |
| 21 | 1820448 |
| 22 | 2180574 |
| 23 | 2591640 |
| 24 | 3058236 |
| 25 | 3585150 |
| 26 | 4177368 |
| 27 | 4840074 |
| 28 | 5578650 |
| 29 | 6398676 |
| 30 | 7305930 |