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 | 1 |
| 2 | 5 |
| 3 | 47 |
| 4 | 733 |
| 5 | 15907 |
| 6 | 443825 |
| 7 | 15129599 |
| 8 | 609432421 |
| 9 | 28322451979 |
| 10 | 1491650309705 |
| 11 | 87799033276583 |
| 12 | 5711697248522077 |
| 13 | 406948643125302163 |
| 14 | 31515118552199419745 |
| 15 | 2635823964117955940111 |
| 16 | 236779241276954626064149 |
| 17 | 22736883802469421935493211 |