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 | 65536 |
| 2 | 262144 |
| 3 | 1020000 |
| 4 | 3083292 |
| 5 | 7323894 |
| 6 | 15269184 |
| 7 | 29577432 |
| 8 | 53275408 |
| 9 | 90990131 |
| 10 | 149141772 |
| 11 | 236469626 |
| 12 | 364664160 |
| 13 | 549120490 |
| 14 | 809830656 |
| 15 | 1172434356 |
| 16 | 1669450392 |
| 17 | 2341713998 |
| 18 | 3240048488 |
| 19 | 4427203308 |
| 20 | 5980094628 |
| 21 | 7992389097 |