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 | 6481 |
| 2 | 103681 |
| 3 | 844480081 |
| 4 | 1036800001 |
| 5 | 55099802881 |
| 6 | 63727534081 |
| 7 | 115672050001 |
| 8 | 155584800001 |
| 9 | 307529920081 |
| 10 | 322620641281 |
| 11 | 425152800001 |
| 12 | 1019640545281 |
| 13 | 1633266996481 |
| 14 | 1739461754881 |
| 15 | 2489356800001 |
| 16 | 2634683086081 |
| 17 | 2944329626881 |
| 18 | 5285935072081 |
| 19 | 6360160441681 |