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 | 9 |
| 2 | 20 |
| 3 | 42 |
| 4 | 88 |
| 5 | 156 |
| 6 | 238 |
| 7 | 342 |
| 8 | 460 |
| 9 | 696 |
| 10 | 930 |
| 11 | 1184 |
| 12 | 1558 |
| 13 | 1806 |
| 14 | 2068 |
| 15 | 2544 |
| 16 | 3186 |
| 17 | 3660 |
| 18 | 4154 |
| 19 | 4828 |
| 20 | 5256 |
| 21 | 5846 |
| 22 | 6640 |
| 23 | 7476 |
| 24 | 8730 |
| 25 | 9898 |
| 26 | 10506 |
| 27 | 11128 |
| 28 | 11772 |
| 29 | 12430 |
| 30 | 14478 |
| 31 | 16768 |
| 32 | 18084 |
| 33 | 19182 |
| 34 | 20860 |
| 35 | 22650 |
| 36 | 23864 |
| 37 | 25754 |
| 38 | 27388 |
| 39 | 29064 |
| 40 | 31146 |
| 41 | 32580 |
| 42 | 34762 |