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 | 16 |
| 2 | 31 |
| 3 | 32 |
| 4 | 63 |
| 5 | 104 |
| 6 | 210 |
| 7 | 576 |
| 8 | 1651 |
| 9 | 1792 |
| 10 | 4088 |
| 11 | 8880 |
| 12 | 28272 |
| 13 | 79360 |
| 14 | 196416 |
| 15 | 633984 |
| 16 | 1827840 |
| 17 | 7074432 |
| 18 | 22032000 |
| 19 | 86640840 |
| 20 | 364989240 |
| 21 | 1651141800 |
| 22 | 7540142400 |
| 23 | 33541980160 |
| 24 | 90193969152 |
| 25 | 334471118520 |
| 26 | 1415960985600 |
| 27 | 6118878991680 |
| 28 | 29424972595200 |