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 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 14 |
| 7 | 24 |
| 8 | 42 |
| 9 | 73 |
| 10 | 128 |
| 11 | 224 |
| 12 | 393 |
| 13 | 689 |
| 14 | 1209 |
| 15 | 2121 |
| 16 | 3722 |
| 17 | 6531 |
| 18 | 11461 |
| 19 | 20112 |
| 20 | 35294 |
| 21 | 61936 |
| 22 | 108690 |
| 23 | 190737 |
| 24 | 334720 |
| 25 | 587392 |
| 26 | 1030801 |
| 27 | 1808929 |
| 28 | 3174449 |
| 29 | 5570769 |
| 30 | 9776018 |
| 31 | 17155715 |
| 32 | 30106181 |
| 33 | 52832664 |
| 34 | 92714862 |
| 35 | 162703240 |
| 36 | 285524282 |
| 37 | 501060185 |
| 38 | 879299328 |
| 39 | 1543062752 |
| 40 | 2707886361 |