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 | 148 |
| 2 | 4690 |
| 3 | 49646 |
| 4 | 316136 |
| 5 | 1548633 |
| 6 | 6621074 |
| 7 | 26250443 |
| 8 | 98910688 |
| 9 | 356869229 |
| 10 | 1233491661 |
| 11 | 4078987936 |
| 12 | 12893958739 |
| 13 | 38971222534 |
| 14 | 112766372283 |
| 15 | 313016886779 |
| 16 | 835552379045 |
| 17 | 2150549167905 |
| 18 | 5351315229801 |
| 19 | 12907390753903 |
| 20 | 30251757926890 |