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 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 31 |
| 5 | 57 |
| 6 | 105 |
| 7 | 193 |
| 8 | 353 |
| 9 | 653 |
| 10 | 1209 |
| 11 | 2241 |
| 12 | 4161 |
| 13 | 7719 |
| 14 | 14325 |
| 15 | 26581 |
| 16 | 49311 |
| 17 | 91489 |
| 18 | 169729 |
| 19 | 314881 |
| 20 | 584177 |
| 21 | 1083761 |
| 22 | 2010609 |
| 23 | 3730105 |
| 24 | 6920121 |
| 25 | 12838307 |
| 26 | 23817773 |
| 27 | 44187025 |
| 28 | 81976335 |
| 29 | 152083481 |
| 30 | 282147169 |
| 31 | 523442893 |
| 32 | 971097649 |