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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 4 |
| 8 | 4 |
| 9 | 1 |
| 10 | 13 |
| 11 | 13 |
| 12 | 1 |
| 13 | 40 |
| 14 | 40 |
| 15 | 1 |
| 16 | 121 |
| 17 | 121 |
| 18 | 1 |
| 19 | 364 |
| 20 | 364 |
| 21 | 1 |
| 22 | 1093 |
| 23 | 1093 |
| 24 | 1 |
| 25 | 3280 |
| 26 | 3280 |
| 27 | 1 |
| 28 | 9841 |
| 29 | 9841 |
| 30 | 1 |
| 31 | 29524 |
| 32 | 29524 |
| 33 | 1 |
| 34 | 88573 |
| 35 | 88573 |
| 36 | 1 |
| 37 | 265720 |
| 38 | 265720 |
| 39 | 1 |
| 40 | 797161 |
| 41 | 797161 |
| 42 | 1 |
| 43 | 2391484 |
| 44 | 2391484 |
| 45 | 1 |
| 46 | 7174453 |
| 47 | 7174453 |
| 48 | 1 |
| 49 | 21523360 |
| 50 | 21523360 |
| 51 | 1 |
| 52 | 64570081 |
[1,0,0,1,1,1,1,4,4,1,13,13,1,40,40,1,121,121,1, 364,364,1,1093,1093,1,3280,3280,1,9841,9841,1, 29524,29524,1,88573,88573,1,265720,265720,1, 797161,797161,1,2391484,2391484,1,7174453,7174453, 1,21523360,21523360,1,64570081] |