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 | 1 |
| 2 | 136 |
| 3 | 3321 |
| 4 | 32896 |
| 5 | 195625 |
| 6 | 840456 |
| 7 | 2883601 |
| 8 | 8390656 |
| 9 | 21526641 |
| 10 | 50005000 |
| 11 | 107186761 |
| 12 | 215001216 |
| 13 | 407879641 |
| 14 | 737913736 |
| 15 | 1281470625 |
| 16 | 2147516416 |
| 17 | 3487920481 |
| 18 | 5510032776 |
| 19 | 8491846681 |
| 20 | 12800080000 |
| 21 | 18911526921 |
| 22 | 27438053896 |
| 23 | 39155632561 |
| 24 | 55037822976 |