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 | 9 |
| 3 | 22 |
| 4 | 46 |
| 5 | 86 |
| 6 | 148 |
| 7 | 244 |
| 8 | 402 |
| 9 | 685 |
| 10 | 1223 |
| 11 | 2263 |
| 12 | 4243 |
| 13 | 7910 |
| 14 | 14528 |
| 15 | 26274 |
| 16 | 47012 |
| 17 | 83787 |
| 18 | 149619 |
| 19 | 268568 |
| 20 | 484722 |
| 21 | 878014 |
| 22 | 1592150 |
| 23 | 2884434 |
| 24 | 5215660 |
| 25 | 9413514 |
| 26 | 16970286 |
| 27 | 30584282 |
| 28 | 55140634 |
| 29 | 99481417 |
| 30 | 179592631 |
| 31 | 324338478 |
| 32 | 585786560 |