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 | 4 |
| 1 | 5 |
| 2 | 5 |
| 3 | 6 |
| 4 | 7 |
| 5 | 9 |
| 6 | 12 |
| 7 | 17 |
| 8 | 25 |
| 9 | 38 |
| 10 | 59 |
| 11 | 93 |
| 12 | 148 |
| 13 | 237 |
| 14 | 381 |
| 15 | 614 |
| 16 | 991 |
| 17 | 1601 |
| 18 | 2588 |
| 19 | 4185 |
| 20 | 6769 |
| 21 | 10950 |
| 22 | 17715 |
| 23 | 28661 |
| 24 | 46372 |
| 25 | 75029 |
| 26 | 121397 |
| 27 | 196422 |
| 28 | 317815 |
| 29 | 514233 |
| 30 | 832044 |
| 31 | 1346273 |
| 32 | 2178313 |
| 33 | 3524582 |
| 34 | 5702891 |
| 35 | 9227469 |
| 36 | 14930356 |
| 37 | 24157821 |
| 38 | 39088173 |
| 39 | 63245990 |
| 40 | 102334159 |