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) |
|---|---|
| 4 | 13 |
| 5 | 22 |
| 6 | 38 |
| 7 | 64 |
| 8 | 108 |
| 9 | 184 |
| 10 | 312 |
| 11 | 528 |
| 12 | 896 |
| 13 | 1520 |
| 14 | 2576 |
| 15 | 4368 |
| 16 | 7408 |
| 17 | 12560 |
| 18 | 21296 |
| 19 | 36112 |
| 20 | 61232 |
| 21 | 103824 |
| 22 | 176048 |
| 23 | 298512 |
| 24 | 506160 |
| 25 | 858256 |
| 26 | 1455280 |
| 27 | 2467600 |
| 28 | 4184112 |
| 29 | 7094672 |
| 30 | 12029872 |
| 31 | 20398096 |
| 32 | 34587440 |
| 33 | 58647184 |
| 34 | 99443376 |
| 35 | 168618256 |