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 | 1 |
| 1 | 8 |
| 2 | 73 |
| 3 | 689 |
| 4 | 6556 |
| 5 | 62501 |
| 6 | 596113 |
| 7 | 5686112 |
| 8 | 54239137 |
| 9 | 517383521 |
| 10 | 4935293524 |
| 11 | 47077513469 |
| 12 | 449070034657 |
| 13 | 4283656560248 |
| 14 | 40861585458553 |
| 15 | 389776618229969 |
| 16 | 3718059650555596 |
| 17 | 35466384896440661 |
| 18 | 338312070235103473 |
| 19 | 3227141903559443792 |
| 20 | 30783545081553045457 |