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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 2 |
| 7 | 1 |
| 8 | 3 |
| 9 | 2 |
| 10 | 6 |
| 11 | 4 |
| 12 | 9 |
| 13 | 8 |
| 14 | 18 |
| 15 | 16 |
| 16 | 32 |
| 17 | 32 |
| 18 | 61 |
| 19 | 64 |
| 20 | 115 |
| 21 | 128 |
| 22 | 224 |
| 23 | 258 |
| 24 | 431 |
| 25 | 520 |
| 26 | 850 |
| 27 | 1050 |
| 28 | 1673 |
| 29 | 2128 |
| 30 | 3328 |
| 31 | 4320 |
| 32 | 6649 |
| 33 | 8788 |
| 34 | 13366 |
| 35 | 17920 |
| 36 | 26957 |
| 37 | 36610 |
| 38 | 54634 |
| 39 | 74932 |
| 40 | 111057 |
| 41 | 153656 |
| 42 | 226514 |
| 43 | 315616 |
| 44 | 463243 |
| 45 | 649334 |
| 46 | 949823 |
| 47 | 1337984 |
| 48 | 1951760 |