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 | 3 |
| 1 | 14 |
| 2 | 68 |
| 3 | 152 |
| 4 | 304 |
| 5 | 608 |
| 6 | 1984 |
| 7 | 3968 |
| 8 | 12032 |
| 9 | 24064 |
| 10 | 48128 |
| 11 | 96256 |
| 12 | 192512 |
| 13 | 385024 |
| 14 | 770048 |
| 15 | 1540096 |
| 16 | 3080192 |
| 17 | 6160384 |
| 18 | 12320768 |
| 19 | 24641536 |
| 20 | 49283072 |
| 21 | 98566144 |
| 22 | 197132288 |
| 23 | 394264576 |
| 24 | 788529152 |
| 25 | 1577058304 |
| 26 | 3154116608 |
| 27 | 6308233216 |
| 28 | 12616466432 |
| 29 | 25232932864 |
| 30 | 50465865728 |
| 31 | 100931731456 |