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 | 99 |
| 3 | 1030 |
| 4 | 9605 |
| 5 | 84036 |
| 6 | 705895 |
| 7 | 5764802 |
| 8 | 46118409 |
| 9 | 363182464 |
| 10 | 2824752491 |
| 11 | 21750594174 |
| 12 | 166095446413 |
| 13 | 1259557135292 |
| 14 | 9495123019887 |
| 15 | 71213422649146 |
| 16 | 531726889113617 |
| 17 | 3954718737782520 |
| 18 | 29311444762388083 |
| 19 | 216579008522089718 |
| 20 | 1595845325952240021 |
| 21 | 11729463145748964148 |