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A054631 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 4 |
| 6 | 11 |
| 7 | 1 |
| 8 | 6 |
| 9 | 24 |
| 10 | 70 |
| 11 | 1 |
| 12 | 8 |
| 13 | 51 |
| 14 | 208 |
| 15 | 629 |
| 16 | 1 |
| 17 | 14 |
| 18 | 130 |
| 19 | 700 |
| 20 | 2635 |
| 21 | 7826 |
| 22 | 1 |
| 23 | 20 |
| 24 | 315 |
| 25 | 2344 |
| 26 | 11165 |
| 27 | 39996 |
| 28 | 117655 |
| 29 | 1 |
| 30 | 36 |
| 31 | 834 |
| 32 | 8230 |
| 33 | 48915 |
| 34 | 210126 |
| 35 | 720916 |
| 36 | 2097684 |
| 37 | 1 |
| 38 | 60 |
| 39 | 2195 |
| 40 | 29144 |
| 41 | 217045 |
| 42 | 1119796 |
| 43 | 4483815 |
| 44 | 14913200 |
| 45 | 43046889 |
[1,1,3,1,4,11,1,6,24,70,1,8,51,208,629,1,14,130, 700,2635,7826,1,20,315,2344,11165,39996,117655,1, 36,834,8230,48915,210126,720916,2097684,1,60,2195, 29144,217045,1119796,4483815,14913200,43046889] |