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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 1 |
| 7 | 9 |
| 8 | 3 |
| 9 | 1 |
| 10 | 1 |
| 11 | 16 |
| 12 | 120 |
| 13 | 4 |
| 14 | 1 |
| 15 | 1 |
| 16 | 50 |
| 17 | 300 |
| 18 | 2300 |
| 19 | 5 |
| 20 | 1 |
| 21 | 1 |
| 22 | 90 |
| 23 | 4005 |
| 24 | 7140 |
| 25 | 58905 |
| 26 | 6 |
| 27 | 1 |
| 28 | 1 |
| 29 | 245 |
| 30 | 10731 |
| 31 | 518665 |
| 32 | 211876 |
| 33 | 1906884 |
| 34 | 7 |
| 35 | 1 |
| 36 | 1 |
| 37 | 448 |
| 38 | 100128 |
| 39 | 1848224 |
| 40 | 102114376 |
| 41 | 7624512 |
| 42 | 74974368 |
| 43 | 8 |
| 44 | 1 |
| 45 | 1 |
| 46 | 1134 |
| 47 | 285390 |
| 48 | 71728020 |
| 49 | 450710001 |
| 50 | 28845440064 |
| 51 | 324540216 |
| 52 | 3477216600 |
| 53 | 9 |
| 54 | 1 |
[1,1,1,1,2,1,1,9,3,1,1,16,120,4,1,1,50,300,2300,5, 1,1,90,4005,7140,58905,6,1,1,245,10731,518665, 211876,1906884,7,1,1,448,100128,1848224,102114376, 7624512,74974368,8,1,1,1134,285390,71728020, 450710001,28845440064,324540216,3477216600,9,1] |