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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 2 |
| 4 | 13 |
| 5 | 40 |
| 6 | 3 |
| 7 | 22 |
| 8 | 121 |
| 9 | 364 |
| 10 | 4 |
| 11 | 31 |
| 12 | 202 |
| 13 | 1093 |
| 14 | 3280 |
| 15 | 5 |
| 16 | 40 |
| 17 | 283 |
| 18 | 1822 |
| 19 | 9841 |
| 20 | 29524 |
| 21 | 6 |
| 22 | 49 |
| 23 | 364 |
| 24 | 2551 |
| 25 | 16402 |
| 26 | 88573 |
| 27 | 265720 |
| 28 | 7 |
| 29 | 58 |
| 30 | 445 |
| 31 | 3280 |
| 32 | 22963 |
| 33 | 147622 |
| 34 | 797161 |
| 35 | 2391484 |
| 36 | 8 |
| 37 | 67 |
| 38 | 526 |
| 39 | 4009 |
| 40 | 29524 |
| 41 | 206671 |
| 42 | 1328602 |
| 43 | 7174453 |
| 44 | 21523360 |
[0,1,4,2,13,40,3,22,121,364,4,31,202,1093,3280,5, 40,283,1822,9841,29524,6,49,364,2551,16402,88573, 265720,7,58,445,3280,22963,147622,797161,2391484, 8,67,526,4009,29524,206671,1328602,7174453, 21523360] |