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 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 2 |
| 9 | 0 |
| 10 | 7 |
| 11 | 0 |
| 12 | 7 |
| 13 | 4 |
| 14 | 38 |
| 15 | 0 |
| 16 | 52 |
| 17 | 44 |
| 18 | 192 |
| 19 | 34 |
| 20 | 445 |
| 21 | 328 |
| 22 | 1061 |
| 23 | 658 |
| 24 | 3431 |
| 25 | 2266 |
| 26 | 7293 |
| 27 | 7632 |
| 28 | 24322 |
| 29 | 17946 |
| 30 | 58812 |
| 31 | 70006 |
| 32 | 171467 |
| 33 | 166364 |
| 34 | 488958 |
| 35 | 581520 |
| 36 | 1290879 |
| 37 | 1599416 |
| 38 | 3972675 |
| 39 | 4807640 |
| 40 | 10523661 |
| 41 | 14798098 |
| 42 | 31868794 |
| 43 | 41478042 |
| 44 | 89608805 |
| 45 | 131175180 |
| 46 | 259840862 |
| 47 | 371465030 |