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 | 29 |
| 2 | 841 |
| 3 | 14547 |
| 4 | 160883 |
| 5 | 1271969 |
| 6 | 7795951 |
| 7 | 39162020 |
| 8 | 167679972 |
| 9 | 629671260 |
| 10 | 2118764468 |
| 11 | 6495046664 |
| 12 | 18377663488 |
| 13 | 48503155274 |
| 14 | 120433134332 |
| 15 | 283334050243 |
| 16 | 635338765283 |
| 17 | 1364719186775 |
| 18 | 2820129263963 |
| 19 | 5627010952649 |
| 20 | 10875524219289 |