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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 3 |
| 6 | 0 |
| 7 | 3 |
| 8 | 0 |
| 9 | 9 |
| 10 | 1 |
| 11 | 19 |
| 12 | 2 |
| 13 | 59 |
| 14 | 13 |
| 15 | 161 |
| 16 | 50 |
| 17 | 413 |
| 18 | 123 |
| 19 | 1201 |
| 20 | 352 |
| 21 | 3463 |
| 22 | 689 |
| 23 | 10921 |
| 24 | 1585 |
| 25 | 35365 |
| 26 | 5409 |
| 27 | 110773 |
| 28 | 20950 |
| 29 | 359725 |
| 30 | 82702 |
| 31 | 1192801 |
| 32 | 320873 |
| 33 | 3998397 |
| 34 | 1096384 |
| 35 | 13584075 |
| 36 | 3417934 |
| 37 | 45973713 |
| 38 | 10657777 |
| 39 | 157515581 |
| 40 | 33447019 |
| 41 | 543663919 |
| 42 | 111463220 |
[1,0,1,0,3,0,3,0,9,1,19,2,59,13,161,50,413,123, 1201,352,3463,689,10921,1585,35365,5409,110773, 20950,359725,82702,1192801,320873,3998397,1096384, 13584075,3417934,45973713,10657777,157515581, 33447019,543663919,111463220] |