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 | 7 |
| 2 | 74 |
| 3 | 1118 |
| 4 | 22376 |
| 5 | 559432 |
| 6 | 16783024 |
| 7 | 587405968 |
| 8 | 23496238976 |
| 9 | 1057330754432 |
| 10 | 52866537722624 |
| 11 | 2907659574746368 |
| 12 | 174459574484786176 |
| 13 | 11339872341511109632 |
| 14 | 793791063905777690624 |
| 15 | 59534329792933326829568 |