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 | 6 |
| 2 | 10 |
| 3 | 36 |
| 4 | 82 |
| 5 | 256 |
| 6 | 676 |
| 7 | 2050 |
| 8 | 5826 |
| 9 | 17568 |
| 10 | 51640 |
| 11 | 155590 |
| 12 | 463996 |
| 13 | 1397766 |
| 14 | 4192646 |
| 15 | 12626836 |
| 16 | 37955426 |
| 17 | 114267376 |
| 18 | 343694728 |
| 19 | 1034313190 |
| 20 | 3111132672 |
| 21 | 9359196778 |
| 22 | 28146901826 |
| 23 | 84646727920 |
| 24 | 254509346220 |
| 25 | 765178882006 |
| 26 | 2300166018706 |