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 | 6 |
| 3 | 58 |
| 4 | 578 |
| 5 | 5766 |
| 6 | 57810 |
| 7 | 580310 |
| 8 | 5829538 |
| 9 | 58575686 |
| 10 | 588641522 |
| 11 | 5915670070 |
| 12 | 59451845314 |
| 13 | 597489270438 |
| 14 | 6004768803090 |
| 15 | 60348023150742 |
| 16 | 606498938168290 |
| 17 | 6095328830488582 |
| 18 | 61258206225329970 |
| 19 | 615646518692614390 |
| 20 | 6187263150038580994 |