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) |
|---|---|
| 5 | 1 |
| 6 | 2 |
| 7 | 6 |
| 8 | 17 |
| 9 | 49 |
| 10 | 136 |
| 11 | 386 |
| 12 | 1081 |
| 13 | 3044 |
| 14 | 8549 |
| 15 | 24052 |
| 16 | 67642 |
| 17 | 190426 |
| 18 | 536205 |
| 19 | 1510920 |
| 20 | 4259418 |
| 21 | 12014682 |
| 22 | 33907056 |
| 23 | 95740913 |
| 24 | 270468869 |
| 25 | 764450150 |
| 26 | 2161638413 |
| 27 | 6115252839 |
| 28 | 17307553766 |
| 29 | 49005101669 |
| 30 | 138811296158 |
| 31 | 393351362321 |
| 32 | 1115072623713 |
| 33 | 3162183392471 |