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 | 550 |
| 2 | 748 |
| 3 | 1504 |
| 4 | 7192 |
| 5 | 7912 |
| 6 | 10792 |
| 7 | 17272 |
| 8 | 30592 |
| 9 | 1713592 |
| 10 | 4526272 |
| 11 | 8353792 |
| 12 | 9928792 |
| 13 | 11547352 |
| 14 | 17999992 |
| 15 | 89283592 |
| 16 | 173482552 |
| 17 | 361702144 |
| 18 | 1081850752 |
| 19 | 1845991216 |
| 20 | 2146926592 |
| 21 | 11097907192 |
| 22 | 12985220152 |
| 23 | 21818579968 |
| 24 | 34357510144 |
| 25 | 109170719992 |
| 26 | 228354264064 |
| 27 | 279632332792 |
| 28 | 549746900992 |