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 | 12 |
| 2 | 524 |
| 3 | 5832 |
| 4 | 34632 |
| 5 | 142692 |
| 6 | 462436 |
| 7 | 1264272 |
| 8 | 3044496 |
| 9 | 6644604 |
| 10 | 13406844 |
| 11 | 25370840 |
| 12 | 45516120 |
| 13 | 78055380 |
| 14 | 128783316 |
| 15 | 205485856 |
| 16 | 318414624 |
| 17 | 480831468 |
| 18 | 709627884 |
| 19 | 1026024168 |
| 20 | 1456353128 |
| 21 | 2032933188 |
| 22 | 2795035716 |
| 23 | 3789951408 |