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 | 18 |
| 2 | 42 |
| 3 | 90 |
| 4 | 186 |
| 5 | 196 |
| 6 | 306 |
| 7 | 378 |
| 8 | 420 |
| 9 | 534 |
| 10 | 618 |
| 11 | 654 |
| 12 | 690 |
| 13 | 762 |
| 14 | 834 |
| 15 | 868 |
| 16 | 906 |
| 17 | 1062 |
| 18 | 1110 |
| 19 | 1194 |
| 20 | 1242 |
| 21 | 1326 |
| 22 | 1362 |
| 23 | 1422 |
| 24 | 1458 |
| 25 | 1530 |
| 26 | 1698 |
| 27 | 1764 |
| 28 | 1818 |
| 29 | 1866 |
| 30 | 2118 |
| 31 | 2214 |
| 32 | 2262 |
| 33 | 2324 |
| 34 | 2346 |
| 35 | 2490 |
| 36 | 2598 |
| 37 | 2670 |
| 38 | 2706 |
| 39 | 2730 |
| 40 | 2778 |
| 41 | 2838 |
| 42 | 2862 |
| 43 | 2884 |
| 44 | 2922 |
| 45 | 2958 |
| 46 | 2994 |
| 47 | 3066 |
| 48 | 3138 |