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 | 2 |
| 3 | 2 |
| 4 | 5 |
| 5 | 10 |
| 6 | 16 |
| 7 | 31 |
| 8 | 47 |
| 9 | 88 |
| 10 | 149 |
| 11 | 290 |
| 12 | 536 |
| 13 | 952 |
| 14 | 1769 |
| 15 | 3280 |
| 16 | 6186 |
| 17 | 11638 |
| 18 | 21901 |
| 19 | 41488 |
| 20 | 78543 |
| 21 | 149662 |
| 22 | 284735 |
| 23 | 543155 |
| 24 | 1040577 |
| 25 | 1994339 |
| 26 | 3834731 |
| 27 | 7373228 |
| 28 | 14206331 |
| 29 | 27405523 |
| 30 | 52941914 |
| 31 | 102381148 |