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 | 7 |
| 4 | 13 |
| 5 | 29 |
| 6 | 59 |
| 7 | 119 |
| 8 | 245 |
| 9 | 493 |
| 10 | 995 |
| 11 | 2007 |
| 12 | 4029 |
| 13 | 8093 |
| 14 | 16235 |
| 15 | 32535 |
| 16 | 65189 |
| 17 | 130541 |
| 18 | 261331 |
| 19 | 523063 |
| 20 | 1046701 |
| 21 | 2094301 |
| 22 | 4189979 |
| 23 | 8382007 |
| 24 | 16767189 |
| 25 | 33539181 |
| 26 | 67085635 |
| 27 | 134182423 |
| 28 | 268381725 |
| 29 | 536789149 |
| 30 | 1073617483 |
| 31 | 2147294423 |
| 32 | 4294679429 |
| 33 | 8589496685 |