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 | 7 |
| 2 | 45 |
| 3 | 155 |
| 4 | 415 |
| 5 | 905 |
| 6 | 1755 |
| 7 | 3085 |
| 8 | 5077 |
| 9 | 7891 |
| 10 | 11761 |
| 11 | 16887 |
| 12 | 23555 |
| 13 | 32005 |
| 14 | 42575 |
| 15 | 55545 |
| 16 | 71305 |
| 17 | 90175 |
| 18 | 112597 |
| 19 | 138931 |
| 20 | 169671 |
| 21 | 205217 |
| 22 | 246115 |
| 23 | 292805 |
| 24 | 345885 |
| 25 | 405835 |
| 26 | 473305 |
| 27 | 548815 |
| 28 | 633067 |
| 29 | 726621 |
| 30 | 830231 |
| 31 | 944497 |
| 32 | 1070225 |
| 33 | 1208055 |