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 | 6 |
| 4 | 21 |
| 5 | 52 |
| 6 | 105 |
| 7 | 186 |
| 8 | 301 |
| 9 | 456 |
| 10 | 657 |
| 11 | 910 |
| 12 | 1221 |
| 13 | 1596 |
| 14 | 2041 |
| 15 | 2562 |
| 16 | 3165 |
| 17 | 3856 |
| 18 | 4641 |
| 19 | 5526 |
| 20 | 6517 |
| 21 | 7620 |
| 22 | 8841 |
| 23 | 10186 |
| 24 | 11661 |
| 25 | 13272 |
| 26 | 15025 |
| 27 | 16926 |
| 28 | 18981 |
| 29 | 21196 |
| 30 | 23577 |
| 31 | 26130 |
| 32 | 28861 |
| 33 | 31776 |
| 34 | 34881 |
| 35 | 38182 |
| 36 | 41685 |
| 37 | 45396 |
| 38 | 49321 |
| 39 | 53466 |
| 40 | 57837 |
| 41 | 62440 |
| 42 | 67281 |
| 43 | 72366 |