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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 4 |
| 6 | 3 |
| 7 | 1 |
| 8 | 6 |
| 9 | 18 |
| 10 | 4 |
| 11 | 1 |
| 12 | 8 |
| 13 | 45 |
| 14 | 76 |
| 15 | 5 |
| 16 | 1 |
| 17 | 10 |
| 18 | 84 |
| 19 | 344 |
| 20 | 315 |
| 21 | 6 |
| 22 | 1 |
| 23 | 12 |
| 24 | 135 |
| 25 | 936 |
| 26 | 2670 |
| 27 | 1296 |
| 28 | 7 |
| 29 | 1 |
| 30 | 14 |
| 31 | 198 |
| 32 | 1980 |
| 33 | 10810 |
| 34 | 20886 |
| 35 | 5320 |
| 36 | 8 |
| 37 | 1 |
| 38 | 16 |
| 39 | 273 |
| 40 | 3604 |
| 41 | 30475 |
| 42 | 127632 |
| 43 | 164514 |
| 44 | 21800 |
| 45 | 9 |
| 46 | 1 |
| 47 | 18 |
| 48 | 360 |
| 49 | 5936 |
| 50 | 69405 |
| 51 | 483702 |
| 52 | 1531180 |
| 53 | 1303304 |
| 54 | 89190 |
| 55 | 10 |
| 56 | 1 |
[1,1,2,1,4,3,1,6,18,4,1,8,45,76,5,1,10,84,344,315, 6,1,12,135,936,2670,1296,7,1,14,198,1980,10810, 20886,5320,8,1,16,273,3604,30475,127632,164514, 21800,9,1,18,360,5936,69405,483702,1531180, 1303304,89190,10,1] |