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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 9 |
| 11 | 17 |
| 12 | 33 |
| 13 | 65 |
| 14 | 129 |
| 15 | 257 |
| 16 | 513 |
| 17 | 1025 |
| 18 | 2049 |
| 19 | 4097 |
| 20 | 8185 |
| 21 | 16353 |
| 22 | 32673 |
| 23 | 65281 |
| 24 | 130433 |
| 25 | 260609 |
| 26 | 520705 |
| 27 | 1040385 |
| 28 | 2078721 |
| 29 | 4153345 |
| 30 | 8298505 |
| 31 | 16580657 |
| 32 | 33128641 |
| 33 | 66192001 |
| 34 | 132253569 |
| 35 | 264246529 |
| 36 | 527972353 |
| 37 | 1054904321 |