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 | 1 |
| 2 | 26 |
| 3 | 478 |
| 4 | 5240 |
| 5 | 91879 |
| 6 | 1005029 |
| 7 | 14022582 |
| 8 | 206345434 |
| 9 | 2336659626 |
| 10 | 33576330306 |
| 11 | 449366013476 |
| 12 | 5493251593060 |
| 13 | 78352851554194 |
| 14 | 1004322433621964 |
| 15 | 12914862745129353 |
| 16 | 179013685774367710 |
| 17 | 2278292415139416158 |