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 | 81 |
| 2 | 3645 |
| 3 | 120285 |
| 4 | 3247695 |
| 5 | 75996063 |
| 6 | 1595917323 |
| 7 | 30778405515 |
| 8 | 554011299270 |
| 9 | 9418192087590 |
| 10 | 152574711818958 |
| 11 | 2371843247367438 |
| 12 | 35577648710511570 |
| 13 | 517244277406668210 |
| 14 | 7315311923322878970 |