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 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 18 |
| 5 | 36 |
| 6 | 62 |
| 7 | 90 |
| 8 | 902 |
| 9 | 1214 |
| 10 | 2936 |
| 11 | 3436 |
| 12 | 325726 |
| 13 | 378646 |
| 14 | 646840 |
| 15 | 5432174 |
| 16 | 273222344 |
| 17 | 285775216 |
| 18 | 1411668430 |
| 19 | 1416411790 |
| 20 | 2586905784 |
| 21 | 34620518734 |
| 22 | 564515976926 |
| 23 | 811882646208 |
| 24 | 1326864647898 |
| 25 | 1548008754928 |
| 26 | 2063984735284 |
| 27 | 28933238284712 |
| 28 | 29040521400152 |
| 29 | 31260018191912 |
| 30 | 31586954074712 |
| 31 | 160595113092766 |
| 32 | 164736642645358 |
| 33 | 180312970059936 |