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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 9 |
| 8 | 37 |
| 9 | 121 |
| 10 | 331 |
| 11 | 793 |
| 12 | 1718 |
| 13 | 3448 |
| 14 | 6556 |
| 15 | 12121 |
| 16 | 22509 |
| 17 | 43453 |
| 18 | 89150 |
| 19 | 193823 |
| 20 | 436304 |
| 21 | 989759 |
| 22 | 2219064 |
| 23 | 4869285 |
| 24 | 10434412 |
| 25 | 21900170 |
| 26 | 45297211 |
| 27 | 93054446 |
| 28 | 191371581 |
| 29 | 396480142 |
| 30 | 830227401 |
| 31 | 1756883373 |
| 32 | 3746468095 |
| 33 | 8017653633 |
| 34 | 17151612398 |