The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 2 |
| 6 | 8 |
| 7 | 5 |
| 8 | 16 |
| 9 | 15 |
| 10 | 34 |
| 11 | 30 |
| 12 | 75 |
| 13 | 66 |
| 14 | 144 |
| 15 | 150 |
| 16 | 285 |
| 17 | 292 |
| 18 | 566 |
| 19 | 585 |
| 20 | 1062 |
| 21 | 1170 |
| 22 | 1988 |
| 23 | 2205 |
| 24 | 3729 |
| 25 | 4159 |
| 26 | 6755 |
| 27 | 7785 |
| 28 | 12214 |
| 29 | 14147 |
| 30 | 21957 |
| 31 | 25560 |
| 32 | 38709 |
| 33 | 45839 |
| 34 | 67884 |
| 35 | 80747 |
| 36 | 118332 |
| 37 | 141244 |
| 38 | 203614 |
| 39 | 245330 |
| 40 | 348396 |
| 41 | 420971 |
| 42 | 592439 |
| 43 | 717659 |
| 44 | 998248 |
| 45 | 1215439 |
| 46 | 1672544 |
| 47 | 2040210 |
| 48 | 2786687 |
[1,0,1,1,3,2,8,5,16,15,34,30,75,66,144,150,285, 292,566,585,1062,1170,1988,2205,3729,4159,6755, 7785,12214,14147,21957,25560,38709,45839,67884, 80747,118332,141244,203614,245330,348396,420971, 592439,717659,998248,1215439,1672544,2040210, 2786687] |