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 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 11 |
| 6 | 19 |
| 7 | 43 |
| 8 | 93 |
| 9 | 181 |
| 10 | 371 |
| 11 | 771 |
| 12 | 1547 |
| 13 | 3121 |
| 14 | 6357 |
| 15 | 12821 |
| 16 | 25805 |
| 17 | 52123 |
| 18 | 105031 |
| 19 | 211243 |
| 20 | 425215 |
| 21 | 855457 |
| 22 | 1719257 |
| 23 | 3455153 |
| 24 | 6942387 |
| 25 | 13942111 |
| 26 | 27993317 |
| 27 | 56197117 |
| 28 | 112785797 |
| 29 | 226311535 |
| 30 | 454043339 |
| 31 | 910778203 |
| 32 | 1826666093 |
| 33 | 3663122277 |
| 34 | 7344953123 |