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) |
|---|---|
| 1 | 2187 |
| 2 | 279936 |
| 3 | 4549684 |
| 4 | 32148473 |
| 5 | 157347899 |
| 6 | 630339756 |
| 7 | 2200064042 |
| 8 | 6905100668 |
| 9 | 19884396658 |
| 10 | 53273320570 |
| 11 | 134149069532 |
| 12 | 319991143494 |
| 13 | 727540081476 |
| 14 | 1584708043525 |
| 15 | 3320910477511 |
| 16 | 6719637130491 |
| 17 | 13169292526095 |
| 18 | 25065634112639 |