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) |
|---|---|
| 9 | 5 |
| 10 | 110 |
| 11 | 1001 |
| 12 | 5720 |
| 13 | 24310 |
| 14 | 83980 |
| 15 | 248710 |
| 16 | 653752 |
| 17 | 1562275 |
| 18 | 3453450 |
| 19 | 7153575 |
| 20 | 14024400 |
| 21 | 26225628 |
| 22 | 47071640 |
| 23 | 81505820 |
| 24 | 136719440 |
| 25 | 222945905 |
| 26 | 354465254 |
| 27 | 550858165 |
| 28 | 838553320 |
| 29 | 1252716850 |
| 30 | 1839537700 |
| 31 | 2658968130 |
| 32 | 3787984200 |
| 33 | 5324436975 |
| 34 | 7391571330 |
| 35 | 10143295635 |