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 | 265 |
| 1 | 2119 |
| 2 | 18806 |
| 3 | 183822 |
| 4 | 1965624 |
| 5 | 22852200 |
| 6 | 287250480 |
| 7 | 3884393520 |
| 8 | 56255149440 |
| 9 | 869007242880 |
| 10 | 14266826784000 |
| 11 | 248112809683200 |
| 12 | 4557208289356800 |
| 13 | 88166812070937600 |
| 14 | 1792259345728051200 |
| 15 | 38195370237024000000 |
| 16 | 851609625265631232000 |
| 17 | 19827505082582765568000 |