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 | 2 |
| 2 | 6 |
| 3 | 20 |
| 4 | 42 |
| 5 | 110 |
| 6 | 156 |
| 7 | 272 |
| 8 | 342 |
| 9 | 506 |
| 10 | 812 |
| 11 | 930 |
| 12 | 1332 |
| 13 | 1640 |
| 14 | 1806 |
| 15 | 2162 |
| 16 | 2756 |
| 17 | 3422 |
| 18 | 3660 |
| 19 | 4422 |
| 20 | 4970 |
| 21 | 5256 |
| 22 | 6162 |
| 23 | 6806 |
| 24 | 7832 |
| 25 | 9312 |
| 26 | 10100 |
| 27 | 10506 |
| 28 | 11342 |
| 29 | 11772 |
| 30 | 12656 |
| 31 | 16002 |
| 32 | 17030 |
| 33 | 18632 |
| 34 | 19182 |
| 35 | 22052 |
| 36 | 22650 |
| 37 | 24492 |
| 38 | 26406 |
| 39 | 27722 |
| 40 | 29756 |
| 41 | 31862 |
| 42 | 32580 |
| 43 | 36290 |
| 44 | 37056 |
| 45 | 38612 |
| 46 | 39402 |
| 47 | 44310 |