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 | 68 |
| 3 | 608 |
| 4 | 5648 |
| 5 | 53888 |
| 6 | 523328 |
| 7 | 5139968 |
| 8 | 50839808 |
| 9 | 505038848 |
| 10 | 5030233088 |
| 11 | 50181398528 |
| 12 | 501088391168 |
| 13 | 5006530347008 |
| 14 | 50039182082048 |
| 15 | 500235092492288 |
| 16 | 5001410554953728 |
| 17 | 50008463329722368 |
| 18 | 500050779978334208 |
| 19 | 5000304679870005248 |
| 20 | 50001828079220031488 |
| 21 | 500010968475320188928 |