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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 9 |
| 6 | 18 |
| 7 | 45 |
| 8 | 117 |
| 9 | 189 |
| 10 | 279 |
| 11 | 297 |
| 12 | 414 |
| 13 | 441 |
| 14 | 612 |
| 15 | 738 |
| 16 | 855 |
| 17 | 1278 |
| 18 | 1836 |
| 19 | 1863 |
| 20 | 2223 |
| 21 | 2736 |
| 22 | 3321 |
| 23 | 3519 |
| 24 | 5400 |
| 25 | 5472 |
| 26 | 5661 |
| 27 | 5751 |
| 28 | 6039 |
| 29 | 7074 |
| 30 | 8055 |
| 31 | 8397 |
| 32 | 8496 |
| 33 | 8523 |
| 34 | 9207 |
| 35 | 9576 |
| 36 | 11223 |
| 37 | 12087 |
| 38 | 13023 |
| 39 | 13095 |
| 40 | 15804 |
| 41 | 16983 |
| 42 | 17154 |
| 43 | 20637 |
| 44 | 21771 |
| 45 | 21942 |
| 46 | 23967 |