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 | -1 |
| 2 | 1 |
| 3 | 21 |
| 4 | 86 |
| 5 | 235 |
| 6 | 519 |
| 7 | 1001 |
| 8 | 1756 |
| 9 | 2871 |
| 10 | 4445 |
| 11 | 6589 |
| 12 | 9426 |
| 13 | 13091 |
| 14 | 17731 |
| 15 | 23505 |
| 16 | 30584 |
| 17 | 39151 |
| 18 | 49401 |
| 19 | 61541 |
| 20 | 75790 |
| 21 | 92379 |
| 22 | 111551 |
| 23 | 133561 |
| 24 | 158676 |
| 25 | 187175 |
| 26 | 219349 |
| 27 | 255501 |
| 28 | 295946 |
| 29 | 341011 |
| 30 | 391035 |
| 31 | 446369 |
| 32 | 507376 |
| 33 | 574431 |
| 34 | 647921 |
| 35 | 728245 |
| 36 | 815814 |