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) |
|---|---|
| 22 | 1 |
| 23 | 23 |
| 24 | 276 |
| 25 | 2300 |
| 26 | 14950 |
| 27 | 80730 |
| 28 | 376740 |
| 29 | 1560780 |
| 30 | 5852925 |
| 31 | 20160075 |
| 32 | 64512240 |
| 33 | 193536720 |
| 34 | 548354040 |
| 35 | 1476337800 |
| 36 | 3796297200 |
| 37 | 9364199760 |
| 38 | 22239974430 |
| 39 | 51021117810 |
| 40 | 113380261800 |
| 41 | 244662670200 |
| 42 | 513791607420 |
| 43 | 1052049481860 |
| 44 | 2104098963720 |
| 45 | 4116715363800 |