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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 6 |
| 5 | 22 |
| 6 | 52 |
| 7 | 112 |
| 8 | 212 |
| 9 | 376 |
| 10 | 640 |
| 11 | 1011 |
| 12 | 1560 |
| 13 | 2293 |
| 14 | 3328 |
| 15 | 4711 |
| 16 | 6524 |
| 17 | 8765 |
| 18 | 11703 |
| 19 | 15273 |
| 20 | 19886 |
| 21 | 25459 |
| 22 | 32224 |
| 23 | 40193 |
| 24 | 50022 |
| 25 | 61521 |
| 26 | 75059 |
| 27 | 90825 |
| 28 | 109479 |
| 29 | 130520 |
| 30 | 155415 |
| 31 | 183229 |
| 32 | 215594 |
| 33 | 252070 |
| 34 | 293377 |
| 35 | 340266 |
| 36 | 393232 |
| 37 | 451522 |
| 38 | 517139 |
| 39 | 590227 |