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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 11 |
| 4 | 25 |
| 5 | 52 |
| 6 | 102 |
| 7 | 193 |
| 8 | 356 |
| 9 | 645 |
| 10 | 1153 |
| 11 | 2040 |
| 12 | 3580 |
| 13 | 6241 |
| 14 | 10820 |
| 15 | 18671 |
| 16 | 32089 |
| 17 | 54956 |
| 18 | 93826 |
| 19 | 159745 |
| 20 | 271300 |
| 21 | 459721 |
| 22 | 777409 |
| 23 | 1312176 |
| 24 | 2211000 |
| 25 | 3719617 |
| 26 | 6248452 |
| 27 | 10482323 |
| 28 | 17562841 |
| 29 | 29391460 |
| 30 | 49132638 |
| 31 | 82048705 |
| 32 | 136884260 |