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 | 10 |
| 2 | 160 |
| 3 | 2800 |
| 4 | 51400 |
| 5 | 970000 |
| 6 | 18640000 |
| 7 | 362800000 |
| 8 | 7128700000 |
| 9 | 141103000000 |
| 10 | 2809273600000 |
| 11 | 56197096000000 |
| 12 | 1128614356000000 |
| 13 | 22741607080000000 |
| 14 | 459548117440000000 |
| 15 | 9309106936000000000 |
| 16 | 188980474087000000000 |