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 | 2 |
| 2 | 4 |
| 3 | 11 |
| 4 | 23 |
| 5 | 51 |
| 6 | 107 |
| 7 | 216 |
| 8 | 430 |
| 9 | 839 |
| 10 | 1614 |
| 11 | 3046 |
| 12 | 5684 |
| 13 | 10465 |
| 14 | 19046 |
| 15 | 34321 |
| 16 | 61225 |
| 17 | 108245 |
| 18 | 189779 |
| 19 | 330093 |
| 20 | 569916 |
| 21 | 977139 |
| 22 | 1664304 |
| 23 | 2817039 |
| 24 | 4740000 |
| 25 | 7930740 |
| 26 | 13198108 |
| 27 | 21851556 |
| 28 | 36001483 |
| 29 | 59035979 |
| 30 | 96373100 |
| 31 | 156644241 |
| 32 | 253550911 |