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 | 3 |
| 2 | 6 |
| 3 | 11 |
| 4 | 18 |
| 5 | 29 |
| 6 | 46 |
| 7 | 73 |
| 8 | 116 |
| 9 | 183 |
| 10 | 290 |
| 11 | 459 |
| 12 | 726 |
| 13 | 1149 |
| 14 | 1818 |
| 15 | 2877 |
| 16 | 4552 |
| 17 | 7203 |
| 18 | 11398 |
| 19 | 18035 |
| 20 | 28538 |
| 21 | 45157 |
| 22 | 71454 |
| 23 | 113065 |
| 24 | 178908 |
| 25 | 283095 |
| 26 | 447954 |
| 27 | 708819 |
| 28 | 1121598 |
| 29 | 1774757 |
| 30 | 2808282 |
| 31 | 4443677 |
| 32 | 7031440 |
| 33 | 11126179 |
| 34 | 17605478 |
| 35 | 27857979 |
| 36 | 44080994 |
| 37 | 69751437 |
| 38 | 110370990 |
| 39 | 174645225 |
| 40 | 276349380 |
| 41 | 437280663 |
| 42 | 691929826 |