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) |
|---|---|
| 3 | 6 |
| 4 | 12 |
| 5 | 30 |
| 6 | 34 |
| 7 | 56 |
| 8 | 108 |
| 9 | 150 |
| 10 | 244 |
| 11 | 418 |
| 12 | 642 |
| 13 | 1040 |
| 14 | 1712 |
| 15 | 2726 |
| 16 | 4412 |
| 17 | 7174 |
| 18 | 11554 |
| 19 | 18696 |
| 20 | 30292 |
| 21 | 48950 |
| 22 | 79204 |
| 23 | 128202 |
| 24 | 207362 |
| 25 | 335520 |
| 26 | 542936 |
| 27 | 878406 |
| 28 | 1421292 |
| 29 | 2299758 |
| 30 | 3720994 |
| 31 | 6020696 |
| 32 | 9741756 |
| 33 | 15762390 |
| 34 | 25504084 |
| 35 | 41266546 |
| 36 | 66770562 |
| 37 | 108037040 |
| 38 | 174807680 |
| 39 | 282844646 |
| 40 | 457652252 |
| 41 | 740496982 |
| 42 | 1198149154 |
| 43 | 1938646056 |