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 | 4 |
| 2 | 8 |
| 3 | 24 |
| 4 | 88 |
| 5 | 344 |
| 6 | 1368 |
| 7 | 5464 |
| 8 | 21848 |
| 9 | 87384 |
| 10 | 349528 |
| 11 | 1398104 |
| 12 | 5592408 |
| 13 | 22369624 |
| 14 | 89478488 |
| 15 | 357913944 |
| 16 | 1431655768 |
| 17 | 5726623064 |
| 18 | 22906492248 |
| 19 | 91625968984 |
| 20 | 366503875928 |
| 21 | 1466015503704 |
| 22 | 5864062014808 |
| 23 | 23456248059224 |
| 24 | 93824992236888 |
| 25 | 375299968947544 |