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 | 1 |
| 1 | 99 |
| 2 | 1765 |
| 3 | 14407 |
| 4 | 74313 |
| 5 | 284075 |
| 6 | 880685 |
| 7 | 2340495 |
| 8 | 5529233 |
| 9 | 11905267 |
| 10 | 23784309 |
| 11 | 44673751 |
| 12 | 79684825 |
| 13 | 136030779 |
| 14 | 223619261 |
| 15 | 355747103 |
| 16 | 549905697 |
| 17 | 828705155 |
| 18 | 1220925445 |
| 19 | 1762702695 |
| 20 | 2498858857 |
| 21 | 3484382923 |
| 22 | 4786071885 |
| 23 | 6484339631 |
| 24 | 8675201969 |
| 25 | 11472445971 |
| 26 | 15009991829 |