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 | 0 |
| 1 | 0 |
| 2 | 3 |
| 3 | 13 |
| 4 | 37 |
| 5 | 84 |
| 6 | 164 |
| 7 | 291 |
| 8 | 480 |
| 9 | 748 |
| 10 | 1115 |
| 11 | 1602 |
| 12 | 2233 |
| 13 | 3034 |
| 14 | 4033 |
| 15 | 5260 |
| 16 | 6747 |
| 17 | 8529 |
| 18 | 10642 |
| 19 | 13125 |
| 20 | 16019 |
| 21 | 19366 |
| 22 | 23212 |
| 23 | 27604 |
| 24 | 32591 |
| 25 | 38225 |
| 26 | 44559 |
| 27 | 51649 |
| 28 | 59553 |
| 29 | 68331 |
| 30 | 78045 |
| 31 | 88759 |
| 32 | 100540 |
| 33 | 113456 |
| 34 | 127578 |
| 35 | 142979 |
| 36 | 159733 |
| 37 | 177918 |
| 38 | 197613 |
| 39 | 218899 |
| 40 | 241860 |