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) |
|---|---|
| 8 | 9 |
| 9 | 146 |
| 10 | 1324 |
| 11 | 8786 |
| 12 | 47013 |
| 13 | 214997 |
| 14 | 874413 |
| 15 | 3228005 |
| 16 | 11049817 |
| 17 | 35389760 |
| 18 | 107476721 |
| 19 | 310853113 |
| 20 | 863984856 |
| 21 | 2313084483 |
| 22 | 6003120701 |
| 23 | 15122836712 |
| 24 | 37154716734 |
| 25 | 89093938147 |
| 26 | 209258012995 |
| 27 | 481663102867 |
| 28 | 1089445474512 |
| 29 | 2422311605452 |
| 30 | 5305675093522 |
| 31 | 11451261202545 |