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 | 8 |
| 2 | 31 |
| 3 | 48 |
| 4 | 194 |
| 5 | 445 |
| 6 | 1271 |
| 7 | 3915 |
| 8 | 12420 |
| 9 | 42897 |
| 10 | 158170 |
| 11 | 605532 |
| 12 | 2395817 |
| 13 | 9709409 |
| 14 | 39880121 |
| 15 | 165585758 |
| 16 | 693033415 |
| 17 | 2914777618 |
| 18 | 12305134022 |
| 19 | 52090542883 |
| 20 | 220906709231 |
| 21 | 938079788895 |
| 22 | 3987432050368 |
| 23 | 16960357014483 |
| 24 | 72175348991290 |