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 | 243 |
| 2 | 3368 |
| 3 | 20175 |
| 4 | 181226 |
| 5 | 552519 |
| 6 | 1972376 |
| 7 | 4448475 |
| 8 | 10884818 |
| 9 | 31395967 |
| 10 | 60025118 |
| 11 | 129369075 |
| 12 | 245225276 |
| 13 | 392233719 |
| 14 | 621578726 |
| 15 | 1039774219 |
| 16 | 1754698518 |
| 17 | 2599294819 |
| 18 | 3949419926 |
| 19 | 5753649277 |
| 20 | 7826720870 |
| 21 | 10903777269 |
| 22 | 14842817912 |