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 | 13 |
| 2 | 48 |
| 3 | 181 |
| 4 | 405 |
| 5 | 951 |
| 6 | 1792 |
| 7 | 3434 |
| 8 | 5625 |
| 9 | 9365 |
| 10 | 14256 |
| 11 | 21855 |
| 12 | 31213 |
| 13 | 44863 |
| 14 | 61440 |
| 15 | 84500 |
| 16 | 111537 |
| 17 | 147789 |
| 18 | 190000 |
| 19 | 244905 |
| 20 | 307461 |
| 21 | 386903 |
| 22 | 476928 |
| 23 | 588990 |
| 24 | 714025 |
| 25 | 867061 |
| 26 | 1037232 |
| 27 | 1242451 |
| 28 | 1468125 |
| 29 | 1736895 |
| 30 | 2031616 |
| 31 | 2378792 |
| 32 | 2756193 |
| 33 | 3196493 |