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 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 14 |
| 5 | 20 |
| 6 | 24 |
| 7 | 30 |
| 8 | 42 |
| 9 | 62 |
| 10 | 78 |
| 11 | 110 |
| 12 | 120 |
| 13 | 126 |
| 14 | 156 |
| 15 | 240 |
| 16 | 254 |
| 17 | 272 |
| 18 | 336 |
| 19 | 342 |
| 20 | 510 |
| 21 | 620 |
| 22 | 726 |
| 23 | 812 |
| 24 | 930 |
| 25 | 1022 |
| 26 | 1320 |
| 27 | 1332 |
| 28 | 1640 |
| 29 | 1806 |
| 30 | 2046 |
| 31 | 2184 |
| 32 | 2394 |
| 33 | 2756 |
| 34 | 3120 |
| 35 | 3422 |
| 36 | 3660 |
| 37 | 4094 |
| 38 | 4422 |
| 39 | 4896 |
| 40 | 4970 |
| 41 | 5256 |
| 42 | 6162 |
| 43 | 6558 |
| 44 | 6840 |
| 45 | 7832 |
| 46 | 8190 |
| 47 | 9312 |
| 48 | 10100 |
| 49 | 10506 |