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 | 10 |
| 3 | 31 |
| 4 | 68 |
| 5 | 218 |
| 6 | 729 |
| 7 | 2097 |
| 8 | 6139 |
| 9 | 18932 |
| 10 | 57273 |
| 11 | 170792 |
| 12 | 514608 |
| 13 | 1554993 |
| 14 | 4677797 |
| 15 | 14071941 |
| 16 | 42401182 |
| 17 | 127713015 |
| 18 | 384477424 |
| 19 | 1157762858 |
| 20 | 3486768241 |
| 21 | 10499588277 |
| 22 | 31616525407 |
| 23 | 95208917296 |
| 24 | 286707283257 |
| 25 | 863361068252 |
| 26 | 2599853035248 |