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 | 6 |
| 6 | 11 |
| 7 | 15 |
| 8 | 27 |
| 9 | 43 |
| 10 | 75 |
| 11 | 125 |
| 12 | 228 |
| 13 | 391 |
| 14 | 707 |
| 15 | 1262 |
| 16 | 2285 |
| 17 | 4119 |
| 18 | 7525 |
| 19 | 13691 |
| 20 | 25111 |
| 21 | 46033 |
| 22 | 84740 |
| 23 | 156123 |
| 24 | 288529 |
| 25 | 533670 |
| 26 | 989305 |
| 27 | 1835983 |
| 28 | 3412885 |
| 29 | 6351031 |
| 30 | 11834623 |
| 31 | 22074821 |
| 32 | 41222028 |
| 33 | 77048131 |
| 34 | 144148859 |
| 35 | 269913278 |
| 36 | 505826391 |
| 37 | 948652695 |
| 38 | 1780473001 |
| 39 | 3343960175 |
| 40 | 6284560319 |
| 41 | 11818395345 |