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 | 94500 |
| 2 | 195300 |
| 3 | 1674000 |
| 4 | 27432000 |
| 5 | 56692800 |
| 6 | 325883250 |
| 7 | 735257250 |
| 8 | 113232384000 |
| 9 | 234013593600 |
| 10 | 28990808064000 |
| 11 | 59914336665600 |
| 12 | 463855583232000 |
| 13 | 559625737239000 |
| 14 | 958634872012800 |
| 15 | 1373356918809000 |
| 16 | 7782220152472338432000 |
| 17 | 16083254981776166092800 |
| 18 | 8972288971548182138209587578844217344000 |