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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | 6 |
| 9 | 1 |
| 10 | 1 |
| 11 | 28 |
| 12 | 84 |
| 13 | 28 |
| 14 | 1 |
| 15 | 1 |
| 16 | 120 |
| 17 | 792 |
| 18 | 792 |
| 19 | 120 |
| 20 | 1 |
| 21 | 1 |
| 22 | 495 |
| 23 | 6435 |
| 24 | 12870 |
| 25 | 6435 |
| 26 | 495 |
| 27 | 1 |
| 28 | 1 |
| 29 | 2002 |
| 30 | 48620 |
| 31 | 167960 |
| 32 | 167960 |
| 33 | 48620 |
| 34 | 2002 |
| 35 | 1 |
| 36 | 1 |
| 37 | 8008 |
| 38 | 352716 |
| 39 | 1961256 |
| 40 | 3268760 |
| 41 | 1961256 |
| 42 | 352716 |
| 43 | 8008 |
| 44 | 1 |
| 45 | 1 |
| 46 | 31824 |
| 47 | 2496144 |
| 48 | 21474180 |
| 49 | 54627300 |
| 50 | 54627300 |
| 51 | 21474180 |
| 52 | 2496144 |
| 53 | 31824 |
| 54 | 1 |
[2,1,1,1,1,1,1,6,6,1,1,28,84,28,1,1,120,792,792, 120,1,1,495,6435,12870,6435,495,1,1,2002,48620, 167960,167960,48620,2002,1,1,8008,352716,1961256, 3268760,1961256,352716,8008,1,1,31824,2496144, 21474180,54627300,54627300,21474180,2496144,31824, 1] |