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 | 16 |
| 2 | 9 |
| 3 | 11 |
| 4 | 33 |
| 5 | 63 |
| 6 | 187 |
| 7 | 661 |
| 8 | 1837 |
| 9 | 5075 |
| 10 | 15661 |
| 11 | 46975 |
| 12 | 135191 |
| 13 | 398107 |
| 14 | 1187251 |
| 15 | 3492697 |
| 16 | 10253381 |
| 17 | 30301323 |
| 18 | 89476359 |
| 19 | 263483993 |
| 20 | 776726391 |
| 21 | 2291909243 |
| 22 | 6757855265 |
| 23 | 19921284797 |
| 24 | 58748244533 |
| 25 | 173250475905 |
| 26 | 510831651353 |