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) |
|---|---|
| 0 | 10 |
| 1 | 32 |
| 2 | 98 |
| 3 | 296 |
| 4 | 890 |
| 5 | 2672 |
| 6 | 8018 |
| 7 | 24056 |
| 8 | 72170 |
| 9 | 216512 |
| 10 | 649538 |
| 11 | 1948616 |
| 12 | 5845850 |
| 13 | 17537552 |
| 14 | 52612658 |
| 15 | 157837976 |
| 16 | 473513930 |
| 17 | 1420541792 |
| 18 | 4261625378 |
| 19 | 12784876136 |
| 20 | 38354628410 |
| 21 | 115063885232 |
| 22 | 345191655698 |
| 23 | 1035574967096 |
| 24 | 3106724901290 |