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 | 17 |
| 1 | 32 |
| 2 | 4064 |
| 3 | 70016 |
| 4 | 528352 |
| 5 | 2500032 |
| 6 | 8892032 |
| 7 | 26353408 |
| 8 | 67637216 |
| 9 | 153125024 |
| 10 | 317504064 |
| 11 | 623589504 |
| 12 | 1156034176 |
| 13 | 2007952576 |
| 14 | 3346882816 |
| 15 | 5470070016 |
| 16 | 8657571808 |
| 17 | 13130837568 |
| 18 | 19446878048 |
| 19 | 28603895680 |
| 20 | 41278028352 |
| 21 | 57661256704 |
| 22 | 79195867008 |
| 23 | 108954414336 |
| 24 | 147990228608 |