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 | 4 |
| 6 | 10 |
| 7 | 69 |
| 8 | 195 |
| 9 | 929 |
| 10 | 3044 |
| 11 | 11824 |
| 12 | 40985 |
| 13 | 158079 |
| 14 | 539876 |
| 15 | 2065087 |
| 16 | 7272937 |
| 17 | 27923757 |
| 18 | 101194930 |
| 19 | 381940222 |
| 20 | 1429135919 |
| 21 | 5607176733 |
| 22 | 21323561733 |
| 23 | 84260636527 |
| 24 | 325309822037 |
| 25 | 1337034045619 |
| 26 | 5421586411034 |
| 27 | 22509005469068 |
| 28 | 92412147570641 |
| 29 | 390023528935516 |