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 | 3 |
| 5 | 6 |
| 6 | 10 |
| 7 | 18 |
| 8 | 42 |
| 9 | 94 |
| 10 | 193 |
| 11 | 428 |
| 12 | 1036 |
| 13 | 2470 |
| 14 | 5779 |
| 15 | 14192 |
| 16 | 36176 |
| 17 | 91649 |
| 18 | 233617 |
| 19 | 613978 |
| 20 | 1641492 |
| 21 | 4396393 |
| 22 | 11922501 |
| 23 | 32969768 |
| 24 | 92080274 |
| 25 | 258774392 |
| 26 | 736441673 |
| 27 | 2123145058 |
| 28 | 6168831095 |
| 29 | 18067587851 |
| 30 | 53493963264 |
| 31 | 159884523503 |
| 32 | 481343585105 |
| 33 | 1461055679181 |