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 | 1 |
| 1 | 24 |
| 2 | 282 |
| 3 | 2008 |
| 4 | 10147 |
| 5 | 40176 |
| 6 | 132724 |
| 7 | 381424 |
| 8 | 981541 |
| 9 | 2309384 |
| 10 | 5045326 |
| 11 | 10356424 |
| 12 | 20158151 |
| 13 | 37478624 |
| 14 | 66952936 |
| 15 | 115479776 |
| 16 | 193077449 |
| 17 | 313981688 |
| 18 | 498033282 |
| 19 | 772409528 |
| 20 | 1173759851 |
| 21 | 1750812624 |
| 22 | 2567527260 |
| 23 | 3706873040 |