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 | 5 |
| 4 | 13 |
| 5 | 32 |
| 6 | 74 |
| 7 | 163 |
| 8 | 347 |
| 9 | 722 |
| 10 | 1480 |
| 11 | 3005 |
| 12 | 6065 |
| 13 | 12196 |
| 14 | 24470 |
| 15 | 49031 |
| 16 | 98167 |
| 17 | 196454 |
| 18 | 393044 |
| 19 | 786241 |
| 20 | 1572653 |
| 21 | 3145496 |
| 22 | 6291202 |
| 23 | 12582635 |
| 24 | 25165523 |
| 25 | 50331322 |
| 26 | 100662944 |
| 27 | 201326213 |
| 28 | 402652777 |
| 29 | 805305932 |
| 30 | 1610612270 |
| 31 | 3221224975 |
| 32 | 6442450415 |
| 33 | 12884901326 |