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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 7 |
| 10 | 10 |
| 11 | 16 |
| 12 | 25 |
| 13 | 40 |
| 14 | 62 |
| 15 | 101 |
| 16 | 159 |
| 17 | 257 |
| 18 | 410 |
| 19 | 663 |
| 20 | 1062 |
| 21 | 1719 |
| 22 | 2764 |
| 23 | 4472 |
| 24 | 7209 |
| 25 | 11664 |
| 26 | 18828 |
| 27 | 30465 |
| 28 | 49221 |
| 29 | 79641 |
| 30 | 128746 |
| 31 | 208315 |
| 32 | 336872 |
| 33 | 545071 |
| 34 | 881638 |
| 35 | 1426520 |
| 36 | 2307665 |
| 37 | 3733880 |
| 38 | 6040746 |
| 39 | 9774133 |
| 40 | 15813587 |
| 41 | 25586921 |
| 42 | 41398418 |