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 | 64 |
| 2 | 1094 |
| 3 | 8192 |
| 4 | 39063 |
| 5 | 139968 |
| 6 | 411772 |
| 7 | 1048576 |
| 8 | 2391485 |
| 9 | 5000000 |
| 10 | 9743586 |
| 11 | 17915904 |
| 12 | 31374259 |
| 13 | 52706752 |
| 14 | 85429688 |
| 15 | 134217728 |
| 16 | 205169337 |
| 17 | 306110016 |
| 18 | 446935870 |
| 19 | 640000000 |
| 20 | 900544271 |
| 21 | 1247178944 |
| 22 | 1702412724 |
| 23 | 2293235712 |
| 24 | 3051757813 |
| 25 | 4015905088 |