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 | 1 |
| 2 | 11 |
| 3 | 231 |
| 4 | 7161 |
| 5 | 293601 |
| 6 | 14973651 |
| 7 | 913392711 |
| 8 | 64850882481 |
| 9 | 5252921480961 |
| 10 | 478015854767451 |
| 11 | 48279601331512551 |
| 12 | 5359035747797893161 |
| 13 | 648443325483545072481 |
| 14 | 84946075638344404495011 |
| 15 | 11977396665006561033796551 |
| 16 | 1808586896415990716103279201 |
| 17 | 291182490322974505292627951361 |