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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 20 |
| 7 | 37 |
| 8 | 76 |
| 9 | 153 |
| 10 | 329 |
| 11 | 710 |
| 12 | 1601 |
| 13 | 3658 |
| 14 | 8599 |
| 15 | 20514 |
| 16 | 49905 |
| 17 | 122963 |
| 18 | 307199 |
| 19 | 775529 |
| 20 | 1977878 |
| 21 | 5086638 |
| 22 | 13184156 |
| 23 | 34402932 |
| 24 | 90328674 |
| 25 | 238474986 |
| 26 | 632775648 |
| 27 | 1686705630 |
| 28 | 4514955632 |
| 29 | 12132227370 |
| 30 | 32717113805 |
| 31 | 88519867048 |
| 32 | 240235675303 |