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 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 18 |
| 4 | 48 |
| 5 | 125 |
| 6 | 288 |
| 7 | 637 |
| 8 | 1344 |
| 9 | 2754 |
| 10 | 5500 |
| 11 | 10769 |
| 12 | 20736 |
| 13 | 39377 |
| 14 | 73892 |
| 15 | 137250 |
| 16 | 252672 |
| 17 | 461533 |
| 18 | 837216 |
| 19 | 1509341 |
| 20 | 2706000 |
| 21 | 4827186 |
| 22 | 8572124 |
| 23 | 15159553 |
| 24 | 26707968 |
| 25 | 46890625 |
| 26 | 82061668 |
| 27 | 143188722 |
| 28 | 249163824 |
| 29 | 432466589 |
| 30 | 748836000 |
| 31 | 1293764509 |
| 32 | 2230588416 |
| 33 | 3838265442 |
| 34 | 6592537372 |
| 35 | 11303644625 |
| 36 | 19349736192 |