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 | 1 |
| 1 | 8 |
| 2 | 32 |
| 3 | 104 |
| 4 | 304 |
| 5 | 832 |
| 6 | 2176 |
| 7 | 5504 |
| 8 | 13568 |
| 9 | 32768 |
| 10 | 77824 |
| 11 | 182272 |
| 12 | 421888 |
| 13 | 966656 |
| 14 | 2195456 |
| 15 | 4947968 |
| 16 | 11075584 |
| 17 | 24641536 |
| 18 | 54525952 |
| 19 | 120061952 |
| 20 | 263192576 |
| 21 | 574619648 |
| 22 | 1249902592 |
| 23 | 2709520384 |
| 24 | 5855248384 |
| 25 | 12616466432 |
| 26 | 27111981056 |
| 27 | 58116276224 |
| 28 | 124285616128 |