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 | 2 |
| 2 | 13 |
| 3 | 19 |
| 4 | 30 |
| 5 | 53 |
| 6 | 92 |
| 7 | 149 |
| 8 | 250 |
| 9 | 426 |
| 10 | 809 |
| 11 | 1456 |
| 12 | 2602 |
| 13 | 4606 |
| 14 | 8096 |
| 15 | 14731 |
| 16 | 27112 |
| 17 | 49118 |
| 18 | 88604 |
| 19 | 159685 |
| 20 | 288458 |
| 21 | 526293 |
| 22 | 960108 |
| 23 | 1742179 |
| 24 | 3159153 |
| 25 | 5731030 |
| 26 | 10414879 |
| 27 | 18970871 |
| 28 | 34518779 |
| 29 | 62715041 |
| 30 | 113954032 |
| 31 | 207132787 |
| 32 | 376765957 |
| 33 | 685570021 |