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 | 0 |
| 1 | 7 |
| 2 | 84 |
| 3 | 861 |
| 4 | 8638 |
| 5 | 86415 |
| 6 | 864192 |
| 7 | 8641969 |
| 8 | 86419746 |
| 9 | 864197523 |
| 10 | 8641975300 |
| 11 | 86419753077 |
| 12 | 864197530854 |
| 13 | 8641975308631 |
| 14 | 86419753086408 |
| 15 | 864197530864185 |
| 16 | 8641975308641962 |
| 17 | 86419753086419739 |
| 18 | 864197530864197516 |
| 19 | 8641975308641975293 |
| 20 | 86419753086419753070 |
| 21 | 864197530864197530847 |