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 | 12 |
| 3 | 30 |
| 4 | 42 |
| 5 | 72 |
| 6 | 110 |
| 7 | 156 |
| 8 | 210 |
| 9 | 272 |
| 10 | 342 |
| 11 | 380 |
| 12 | 420 |
| 13 | 462 |
| 14 | 552 |
| 15 | 650 |
| 16 | 756 |
| 17 | 870 |
| 18 | 992 |
| 19 | 1122 |
| 20 | 1260 |
| 21 | 1406 |
| 22 | 1560 |
| 23 | 1722 |
| 24 | 1892 |
| 25 | 2070 |
| 26 | 2256 |
| 27 | 2450 |
| 28 | 2652 |
| 29 | 2862 |
| 30 | 3080 |
| 31 | 3192 |
| 32 | 3422 |
| 33 | 3660 |
| 34 | 3906 |
| 35 | 4160 |
| 36 | 4422 |
| 37 | 4692 |
| 38 | 4970 |
| 39 | 5256 |
| 40 | 5550 |
| 41 | 5852 |
| 42 | 6162 |
| 43 | 6480 |
| 44 | 6806 |
| 45 | 7140 |
| 46 | 7482 |
| 47 | 7832 |