The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 4 |
| 6 | 3 |
| 7 | 6 |
| 8 | 11 |
| 9 | 19 |
| 10 | 18 |
| 11 | 30 |
| 12 | 29 |
| 13 | 48 |
| 14 | 45 |
| 15 | 74 |
| 16 | 66 |
| 17 | 108 |
| 18 | 87 |
| 19 | 142 |
| 20 | 230 |
| 21 | 373 |
| 22 | 372 |
| 23 | 603 |
| 24 | 600 |
| 25 | 972 |
| 26 | 964 |
| 27 | 1561 |
| 28 | 1540 |
| 29 | 2493 |
| 30 | 2438 |
| 31 | 3946 |
| 32 | 3802 |
| 33 | 6153 |
| 34 | 5776 |
| 35 | 9346 |
| 36 | 8358 |
| 37 | 13525 |
| 38 | 10939 |
| 39 | 17701 |
| 40 | 28642 |
| 41 | 46345 |
| 42 | 46332 |
| 43 | 74968 |
| 44 | 74934 |
| 45 | 121247 |
| 46 | 121158 |
| 47 | 196039 |
| 48 | 195806 |
[0,1,3,2,4,3,6,11,19,18,30,29,48,45,74,66,108,87, 142,230,373,372,603,600,972,964,1561,1540,2493, 2438,3946,3802,6153,5776,9346,8358,13525,10939, 17701,28642,46345,46332,74968,74934,121247,121158, 196039,195806] |