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 | 8 |
| 2 | 217 |
| 3 | 6839 |
| 4 | 238186 |
| 5 | 8779823 |
| 6 | 335842273 |
| 7 | 13185196127 |
| 8 | 527732395714 |
| 9 | 21438596184911 |
| 10 | 881264330165314 |
| 11 | 36575197658193086 |
| 12 | 1530121867019096914 |
| 13 | 64443673226319500222 |
| 14 | 2729760145163758146178 |
| 15 | 116203781083772019594878 |