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 | 0 |
| 2 | 5 |
| 3 | 13 |
| 4 | 35 |
| 5 | 77 |
| 6 | 162 |
| 7 | 322 |
| 8 | 621 |
| 9 | 1167 |
| 10 | 2153 |
| 11 | 3913 |
| 12 | 7028 |
| 13 | 12500 |
| 14 | 22053 |
| 15 | 38641 |
| 16 | 67311 |
| 17 | 116661 |
| 18 | 201302 |
| 19 | 346006 |
| 20 | 592685 |
| 21 | 1012115 |
| 22 | 1723605 |
| 23 | 2927953 |
| 24 | 4962600 |
| 25 | 8393832 |
| 26 | 14170757 |
| 27 | 23882197 |
| 28 | 40184891 |
| 29 | 67516637 |
| 30 | 113283018 |
| 31 | 189830698 |
| 32 | 317726253 |
| 33 | 531200535 |
| 34 | 887182913 |