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 | 29 |
| 1 | 1683 |
| 2 | 97643 |
| 3 | 5664977 |
| 4 | 328666309 |
| 5 | 19068310899 |
| 6 | 1106290698451 |
| 7 | 64183928821057 |
| 8 | 3723774162319757 |
| 9 | 216043085343366963 |
| 10 | 12534222724077603611 |
| 11 | 727200961081844376401 |
| 12 | 42190189965471051434869 |
| 13 | 2447758218958402827598803 |