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 | 1 |
| 1 | 0 |
| 2 | 9765 |
| 3 | 1057224 |
| 4 | 60544953 |
| 5 | 1996794072 |
| 6 | 41694856749 |
| 7 | 584173436400 |
| 8 | 5724932809365 |
| 9 | 40448633569680 |
| 10 | 210758816714985 |
| 11 | 823875120414360 |
| 12 | 2447745309517725 |
| 13 | 5580858785942664 |
| 14 | 9832942289229633 |
| 15 | 13449656041565856 |