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 | 0 |
| 3 | 1 |
| 4 | 6 |
| 5 | 18 |
| 6 | 44 |
| 7 | 91 |
| 8 | 172 |
| 9 | 300 |
| 10 | 496 |
| 11 | 781 |
| 12 | 1186 |
| 13 | 1742 |
| 14 | 2492 |
| 15 | 3479 |
| 16 | 4760 |
| 17 | 6392 |
| 18 | 8448 |
| 19 | 11001 |
| 20 | 14142 |
| 21 | 17962 |
| 22 | 22572 |
| 23 | 28083 |
| 24 | 34628 |
| 25 | 42340 |
| 26 | 51376 |
| 27 | 61893 |
| 28 | 74074 |
| 29 | 88102 |
| 30 | 104188 |
| 31 | 122543 |
| 32 | 143408 |
| 33 | 167024 |
| 34 | 193664 |
| 35 | 223601 |
| 36 | 257142 |
| 37 | 294594 |
| 38 | 336300 |
| 39 | 382603 |
| 40 | 433884 |
| 41 | 490524 |