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 | 15 |
| 2 | 176 |
| 3 | 950 |
| 4 | 3480 |
| 5 | 10045 |
| 6 | 24640 |
| 7 | 53676 |
| 8 | 106800 |
| 9 | 197835 |
| 10 | 345840 |
| 11 | 576290 |
| 12 | 922376 |
| 13 | 1426425 |
| 14 | 2141440 |
| 15 | 3132760 |
| 16 | 4479840 |
| 17 | 6278151 |
| 18 | 8641200 |
| 19 | 11702670 |
| 20 | 15618680 |
| 21 | 20570165 |
| 22 | 26765376 |
| 23 | 34442500 |
| 24 | 43872400 |
| 25 | 55361475 |
| 26 | 69254640 |
| 27 | 85938426 |
| 28 | 105844200 |
| 29 | 129451505 |