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 | -1 |
| 1 | 9 |
| 2 | 35 |
| 3 | 77 |
| 4 | 135 |
| 5 | 209 |
| 6 | 299 |
| 7 | 405 |
| 8 | 527 |
| 9 | 665 |
| 10 | 819 |
| 11 | 989 |
| 12 | 1175 |
| 13 | 1377 |
| 14 | 1595 |
| 15 | 1829 |
| 16 | 2079 |
| 17 | 2345 |
| 18 | 2627 |
| 19 | 2925 |
| 20 | 3239 |
| 21 | 3569 |
| 22 | 3915 |
| 23 | 4277 |
| 24 | 4655 |
| 25 | 5049 |
| 26 | 5459 |
| 27 | 5885 |
| 28 | 6327 |
| 29 | 6785 |
| 30 | 7259 |
| 31 | 7749 |
| 32 | 8255 |
| 33 | 8777 |
| 34 | 9315 |
| 35 | 9869 |
| 36 | 10439 |
| 37 | 11025 |
| 38 | 11627 |
| 39 | 12245 |
| 40 | 12879 |
| 41 | 13529 |
| 42 | 14195 |
| 43 | 14877 |
| 44 | 15575 |
| 45 | 16289 |
| 46 | 17019 |
| 47 | 17765 |