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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 22 |
| 6 | 40 |
| 7 | 42 |
| 8 | 84 |
| 9 | 86 |
| 10 | 90 |
| 11 | 193 |
| 12 | 2712 |
| 13 | 16056 |
| 14 | 16058 |
| 15 | 40077 |
| 16 | 40123 |
| 17 | 40124 |
| 18 | 40125 |
| 19 | 251720 |
| 20 | 251766 |
| 21 | 251769 |
| 22 | 251787 |
| 23 | 637332 |
| 24 | 10553432 |
| 25 | 10553435 |
| 26 | 10553501 |
| 27 | 10553568 |
| 28 | 10553817 |
| 29 | 10553826 |
| 30 | 27067042 |
| 31 | 27067132 |
| 32 | 69709722 |
| 33 | 179993160 |
| 34 | 465769803 |