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 | 5 |
| 2 | 18 |
| 3 | 55 |
| 4 | 149 |
| 5 | 371 |
| 6 | 867 |
| 7 | 1923 |
| 8 | 4086 |
| 9 | 8374 |
| 10 | 16634 |
| 11 | 32152 |
| 12 | 60669 |
| 13 | 112041 |
| 14 | 202943 |
| 15 | 361200 |
| 16 | 632647 |
| 17 | 1091917 |
| 18 | 1859225 |
| 19 | 3126242 |
| 20 | 5195715 |
| 21 | 8541624 |
| 22 | 13899866 |
| 23 | 22404091 |
| 24 | 35787815 |
| 25 | 56683294 |
| 26 | 89061028 |
| 27 | 138872410 |
| 28 | 214984454 |
| 29 | 330532633 |
| 30 | 504869316 |
| 31 | 766357010 |
| 32 | 1156355165 |