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 | 30 |
| 2 | 901 |
| 3 | 27060 |
| 4 | 812701 |
| 5 | 24408090 |
| 6 | 733055401 |
| 7 | 22016070120 |
| 8 | 661215159001 |
| 9 | 19858470840150 |
| 10 | 596415340363501 |
| 11 | 17912318681745180 |
| 12 | 537965975792718901 |
| 13 | 16156891592463312210 |
| 14 | 485244713749692085201 |
| 15 | 14573498304083225868240 |