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 | 4 |
| 3 | 6 |
| 4 | 40 |
| 5 | 42 |
| 6 | 44 |
| 7 | 46 |
| 8 | 112 |
| 9 | 114 |
| 10 | 116 |
| 11 | 118 |
| 12 | 120 |
| 13 | 122 |
| 14 | 124 |
| 15 | 126 |
| 16 | 1312 |
| 17 | 1314 |
| 18 | 1316 |
| 19 | 1318 |
| 20 | 1320 |
| 21 | 1322 |
| 22 | 1324 |
| 23 | 1326 |
| 24 | 1328 |
| 25 | 1330 |
| 26 | 1332 |
| 27 | 1334 |
| 28 | 1336 |
| 29 | 1338 |
| 30 | 1340 |
| 31 | 1342 |
| 32 | 2752 |
| 33 | 2754 |
| 34 | 2756 |
| 35 | 2758 |
| 36 | 2760 |
| 37 | 2762 |
| 38 | 2764 |
| 39 | 2766 |
| 40 | 2768 |
| 41 | 2770 |
| 42 | 2772 |
| 43 | 2774 |
| 44 | 2776 |
| 45 | 2778 |
| 46 | 2780 |
| 47 | 2782 |
| 48 | 2784 |
| 49 | 2786 |
| 50 | 2788 |
| 51 | 2790 |