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 | 5 |
| 5 | 10 |
| 6 | 18 |
| 7 | 23 |
| 8 | 53 |
| 9 | 128 |
| 10 | 194 |
| 11 | 586 |
| 12 | 947 |
| 13 | 2070 |
| 14 | 3667 |
| 15 | 16762 |
| 16 | 33036 |
| 17 | 93402 |
| 18 | 200626 |
| 19 | 445869 |
| 20 | 1517300 |
| 21 | 3715025 |
| 22 | 14526494 |
| 23 | 39369076 |
| 24 | 111448616 |
| 25 | 541299314 |
| 26 | 1713653236 |
| 27 | 5690596129 |
| 28 | 9832997667 |
| 29 | 35075665070 |
| 30 | 131672592907 |
| 31 | 973547058482 |
| 32 | 4162255238584 |
| 33 | 18810021557460 |