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 | 3 |
| 3 | 6 |
| 4 | 15 |
| 5 | 24 |
| 6 | 40 |
| 7 | 104 |
| 8 | 168 |
| 9 | 273 |
| 10 | 714 |
| 11 | 1155 |
| 12 | 1870 |
| 13 | 4895 |
| 14 | 7920 |
| 15 | 12816 |
| 16 | 33552 |
| 17 | 54288 |
| 18 | 87841 |
| 19 | 229970 |
| 20 | 372099 |
| 21 | 602070 |
| 22 | 1576239 |
| 23 | 2550408 |
| 24 | 4126648 |
| 25 | 10803704 |
| 26 | 17480760 |
| 27 | 28284465 |
| 28 | 74049690 |
| 29 | 119814915 |
| 30 | 193864606 |
| 31 | 507544127 |
| 32 | 821223648 |
| 33 | 1328767776 |