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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 4 |
| 7 | 5 |
| 8 | 9 |
| 9 | 14 |
| 10 | 24 |
| 11 | 40 |
| 12 | 70 |
| 13 | 120 |
| 14 | 211 |
| 15 | 371 |
| 16 | 658 |
| 17 | 1172 |
| 18 | 2102 |
| 19 | 3786 |
| 20 | 6856 |
| 21 | 12470 |
| 22 | 22782 |
| 23 | 41789 |
| 24 | 76947 |
| 25 | 142180 |
| 26 | 263578 |
| 27 | 490104 |
| 28 | 913858 |
| 29 | 1708386 |
| 30 | 3201290 |
| 31 | 6011962 |
| 32 | 11313274 |
| 33 | 21329276 |
| 34 | 40282947 |
| 35 | 76202831 |
| 36 | 144370582 |
| 37 | 273906268 |
| 38 | 520359324 |
| 39 | 989804122 |
| 40 | 1884992934 |
| 41 | 3593832942 |
| 42 | 6859139352 |
| 43 | 13104584156 |
| 44 | 25061042050 |
| 45 | 47971076906 |
| 46 | 91906883496 |