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 | 84 |
| 1 | 1470 |
| 2 | 12936 |
| 3 | 77616 |
| 4 | 360360 |
| 5 | 1387386 |
| 6 | 4624620 |
| 7 | 13741728 |
| 8 | 37165128 |
| 9 | 92912820 |
| 10 | 217273056 |
| 11 | 479693760 |
| 12 | 1007356896 |
| 13 | 2024399916 |
| 14 | 3912705720 |
| 15 | 7303717344 |
| 16 | 13213962300 |
| 17 | 23241027810 |
| 18 | 39841761960 |
| 19 | 66720654000 |
| 20 | 109363854600 |
| 21 | 175763337750 |
| 22 | 277386503940 |
| 23 | 430459323840 |