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 | 5 |
| 2 | 1875 |
| 3 | 411963 |
| 4 | 91795006 |
| 5 | 21062468900 |
| 6 | 4671227129777 |
| 7 | 1051116421516975 |
| 8 | 235938457227641114 |
| 9 | 52918918728713551244 |
| 10 | 11878705076408687696978 |
| 11 | 2665431732701413911595239 |
| 12 | 598150296697458294727127430 |
| 13 | 134230850702665615645367175811 |
| 14 | 30122246289517237819939951946581 |