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 | 3 |
| 3 | 8 |
| 4 | 18 |
| 5 | 40 |
| 6 | 96 |
| 7 | 224 |
| 8 | 480 |
| 9 | 1024 |
| 10 | 2304 |
| 11 | 5120 |
| 12 | 10752 |
| 13 | 22528 |
| 14 | 49152 |
| 15 | 102400 |
| 16 | 212992 |
| 17 | 442368 |
| 18 | 917504 |
| 19 | 1966080 |
| 20 | 4194304 |
| 21 | 8650752 |
| 22 | 17825792 |
| 23 | 36700160 |
| 24 | 75497472 |
| 25 | 159383552 |
| 26 | 327155712 |
| 27 | 671088640 |
| 28 | 1409286144 |
| 29 | 2952790016 |
| 30 | 6039797760 |
| 31 | 12348030976 |
| 32 | 25769803776 |