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 | 144 |
| 3 | 546 |
| 4 | 1915 |
| 5 | 4444 |
| 6 | 10489 |
| 7 | 20226 |
| 8 | 39485 |
| 9 | 68430 |
| 10 | 119560 |
| 11 | 192852 |
| 12 | 313293 |
| 13 | 479670 |
| 14 | 740131 |
| 15 | 1089072 |
| 16 | 1617072 |
| 17 | 2306226 |
| 18 | 3323353 |
| 19 | 4621390 |
| 20 | 6500801 |
| 21 | 8852780 |
| 22 | 12205815 |
| 23 | 16330614 |
| 24 | 22134297 |
| 25 | 29166650 |
| 26 | 38947360 |
| 27 | 50640656 |
| 28 | 66733431 |
| 29 | 85743710 |