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 | 0 |
| 2 | 2 |
| 3 | 3 |
| 4 | 9 |
| 5 | 13 |
| 6 | 38 |
| 7 | 56 |
| 8 | 144 |
| 9 | 237 |
| 10 | 524 |
| 11 | 886 |
| 12 | 1961 |
| 13 | 3225 |
| 14 | 6700 |
| 15 | 11702 |
| 16 | 23007 |
| 17 | 39787 |
| 18 | 77647 |
| 19 | 133707 |
| 20 | 254896 |
| 21 | 442736 |
| 22 | 820703 |
| 23 | 1427446 |
| 24 | 2630008 |
| 25 | 4535330 |
| 26 | 8224819 |
| 27 | 14250148 |
| 28 | 25513615 |
| 29 | 43981753 |
| 30 | 78252954 |
| 31 | 134323368 |
| 32 | 236900355 |
| 33 | 406174046 |
| 34 | 709886932 |
| 35 | 1213934012 |