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 | 3 |
| 3 | 6 |
| 4 | 14 |
| 5 | 28 |
| 6 | 61 |
| 7 | 121 |
| 8 | 257 |
| 9 | 508 |
| 10 | 1065 |
| 11 | 2103 |
| 12 | 4372 |
| 13 | 8634 |
| 14 | 17842 |
| 15 | 35254 |
| 16 | 72524 |
| 17 | 143396 |
| 18 | 293968 |
| 19 | 581630 |
| 20 | 1189102 |
| 21 | 2354168 |
| 22 | 4802331 |
| 23 | 9512984 |
| 24 | 19370764 |
| 25 | 38391332 |
| 26 | 78056544 |
| 27 | 154773135 |
| 28 | 314281350 |
| 29 | 623427154 |
| 30 | 1264546021 |
| 31 | 2509378855 |
| 32 | 5085153822 |
| 33 | 10094528146 |