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 | 6 |
| 2 | 110 |
| 3 | 3605 |
| 4 | 168151 |
| 5 | 10162550 |
| 6 | 753640010 |
| 7 | 66200225626 |
| 8 | 6719243243859 |
| 9 | 773662803646264 |
| 10 | 99627047203913814 |
| 11 | 14186632841753756405 |
| 12 | 2213340465298424454702 |
| 13 | 375449162169269152689331 |
| 14 | 68797650004483898373052060 |
| 15 | 13542753444466024362689788808 |