The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 10 |
| 8 | 15 |
| 9 | 21 |
| 10 | 30 |
| 11 | 42 |
| 12 | 62 |
| 13 | 92 |
| 14 | 137 |
| 15 | 204 |
| 16 | 306 |
| 17 | 462 |
| 18 | 701 |
| 19 | 1066 |
| 20 | 1634 |
| 21 | 2504 |
| 22 | 3842 |
| 23 | 5927 |
| 24 | 9135 |
| 25 | 14132 |
| 26 | 21881 |
| 27 | 33958 |
| 28 | 52779 |
| 29 | 82185 |
| 30 | 128158 |
| 31 | 200065 |
| 32 | 312748 |
| 33 | 489472 |
| 34 | 766792 |
| 35 | 1202449 |
| 36 | 1887463 |
| 37 | 2965181 |
| 38 | 4662549 |
| 39 | 7337565 |
| 40 | 11555256 |
| 41 | 18210876 |
| 42 | 28719623 |
[1,2,3,4,5,7,10,15,21,30,42,62,92,137,204,306,462, 701,1066,1634,2504,3842,5927,9135,14132,21881, 33958,52779,82185,128158,200065,312748,489472, 766792,1202449,1887463,2965181,4662549,7337565, 11555256,18210876,28719623] |