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 | 12 |
| 4 | 29 |
| 5 | 62 |
| 6 | 122 |
| 7 | 227 |
| 8 | 406 |
| 9 | 706 |
| 10 | 1203 |
| 11 | 2020 |
| 12 | 3356 |
| 13 | 5533 |
| 14 | 9072 |
| 15 | 14816 |
| 16 | 24129 |
| 17 | 39218 |
| 18 | 63654 |
| 19 | 103215 |
| 20 | 167250 |
| 21 | 270886 |
| 22 | 438599 |
| 23 | 709992 |
| 24 | 1149144 |
| 25 | 1859737 |
| 26 | 3009532 |
| 27 | 4869972 |
| 28 | 7880261 |
| 29 | 12751046 |
| 30 | 20632178 |
| 31 | 33384155 |
| 32 | 54017326 |
| 33 | 87402538 |