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 | 0 |
| 5 | 1 |
| 6 | 3 |
| 7 | 4 |
| 8 | 4 |
| 9 | 11 |
| 10 | 13 |
| 11 | 21 |
| 12 | 30 |
| 13 | 44 |
| 14 | 59 |
| 15 | 92 |
| 16 | 115 |
| 17 | 165 |
| 18 | 225 |
| 19 | 305 |
| 20 | 394 |
| 21 | 546 |
| 22 | 700 |
| 23 | 931 |
| 24 | 1204 |
| 25 | 1572 |
| 26 | 2005 |
| 27 | 2613 |
| 28 | 3290 |
| 29 | 4218 |
| 30 | 5328 |
| 31 | 6745 |
| 32 | 8423 |
| 33 | 10630 |
| 34 | 13193 |
| 35 | 16475 |
| 36 | 20386 |
| 37 | 25269 |
| 38 | 31072 |
| 39 | 38346 |
| 40 | 46882 |
| 41 | 57478 |
| 42 | 70066 |
| 43 | 85415 |
| 44 | 103582 |
| 45 | 125794 |
| 46 | 151916 |
| 47 | 183576 |
| 48 | 220962 |