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 | 3 |
| 3 | 9 |
| 4 | 105 |
| 5 | 429 |
| 6 | 1365 |
| 7 | 1617 |
| 8 | 3887 |
| 9 | 4235 |
| 10 | 10829 |
| 11 | 14025 |
| 12 | 17745 |
| 13 | 21125 |
| 14 | 22627 |
| 15 | 38025 |
| 16 | 54587 |
| 17 | 70805 |
| 18 | 100555 |
| 19 | 115159 |
| 20 | 147875 |
| 21 | 168751 |
| 22 | 169065 |
| 23 | 175769 |
| 24 | 181447 |
| 25 | 181545 |
| 26 | 291525 |
| 27 | 297297 |
| 28 | 303875 |
| 29 | 338675 |
| 30 | 350987 |
| 31 | 501787 |
| 32 | 513825 |
| 33 | 518035 |
| 34 | 549081 |
| 35 | 560947 |
| 36 | 566865 |
| 37 | 594473 |
| 38 | 624169 |
| 39 | 676039 |
| 40 | 735875 |
| 41 | 745147 |
| 42 | 831875 |
| 43 | 869193 |
| 44 | 957125 |