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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 9 |
| 6 | 12 |
| 7 | 39 |
| 8 | 61 |
| 9 | 178 |
| 10 | 274 |
| 11 | 796 |
| 12 | 1251 |
| 13 | 3578 |
| 14 | 5692 |
| 15 | 16290 |
| 16 | 26069 |
| 17 | 74980 |
| 18 | 120676 |
| 19 | 348564 |
| 20 | 563503 |
| 21 | 1635175 |
| 22 | 2652445 |
| 23 | 7729807 |
| 24 | 12574028 |
| 25 | 36784467 |
| 26 | 59975232 |
| 27 | 176063801 |
| 28 | 287613473 |
| 29 | 846967739 |
| 30 | 1385815492 |
| 31 | 4092516853 |
| 32 | 6705360813 |
| 33 | 19852731854 |
| 34 | 32565589836 |
| 35 | 96642900684 |