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 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 21 |
| 6 | 42 |
| 7 | 87 |
| 8 | 189 |
| 9 | 432 |
| 10 | 1018 |
| 11 | 2415 |
| 12 | 5694 |
| 13 | 13297 |
| 14 | 30768 |
| 15 | 70626 |
| 16 | 161011 |
| 17 | 364977 |
| 18 | 823536 |
| 19 | 1851706 |
| 20 | 4152972 |
| 21 | 9298653 |
| 22 | 20800758 |
| 23 | 46516437 |
| 24 | 104044590 |
| 25 | 232856189 |
| 26 | 521601174 |
| 27 | 1169670645 |
| 28 | 2626188319 |
| 29 | 5904269526 |
| 30 | 13292581605 |
| 31 | 29968831278 |
| 32 | 67663806228 |