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 | 35 |
| 3 | 345 |
| 4 | 1955 |
| 5 | 7990 |
| 6 | 26226 |
| 7 | 73470 |
| 8 | 182490 |
| 9 | 412335 |
| 10 | 863005 |
| 11 | 1695551 |
| 12 | 3158805 |
| 13 | 5624060 |
| 14 | 9629140 |
| 15 | 15933420 |
| 16 | 25585476 |
| 17 | 40005165 |
| 18 | 61082055 |
| 19 | 91292245 |
| 20 | 133835735 |
| 21 | 192796626 |
| 22 | 273328550 |
| 23 | 381867850 |
| 24 | 526377150 |
| 25 | 716622075 |
| 26 | 964484001 |
| 27 | 1284311835 |