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 | 0 |
| 4 | 0 |
| 5 | 12 |
| 6 | 82 |
| 7 | 330 |
| 8 | 1008 |
| 9 | 2566 |
| 10 | 5742 |
| 11 | 11652 |
| 12 | 21926 |
| 13 | 38802 |
| 14 | 65322 |
| 15 | 105428 |
| 16 | 164214 |
| 17 | 248022 |
| 18 | 364764 |
| 19 | 523998 |
| 20 | 737334 |
| 21 | 1018488 |
| 22 | 1383768 |
| 23 | 1852104 |
| 24 | 2445628 |
| 25 | 3189660 |
| 26 | 4113396 |
| 27 | 5249848 |
| 28 | 6636636 |
| 29 | 8315880 |
| 30 | 10335110 |
| 31 | 12747090 |
| 32 | 15610860 |
| 33 | 18991490 |