| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 0 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 15 |
| 9 | 19 |
| 10 | 36 |
| 11 | 41 |
| 12 | 77 |
| 13 | 100 |
| 14 | 156 |
| 15 | 230 |
| 16 | 317 |
| 17 | 482 |
| 18 | 665 |
| 19 | 981 |
| 20 | 1354 |
| 21 | 1967 |
| 22 | 2710 |
| 23 | 3852 |
| 24 | 5363 |
| 25 | 7453 |
| 26 | 10373 |
| 27 | 14287 |
| 28 | 19780 |
| 29 | 27022 |
| 30 | 37220 |
| 31 | 50583 |
| 32 | 69140 |
| 33 | 93693 |
| 34 | 127098 |
| 35 | 171640 |
| 36 | 231469 |
| 37 | 311323 |
| 38 | 417627 |
| 39 | 559577 |
| 40 | 747122 |
| 41 | 996947 |
| 42 | 1325872 |
| 43 | 1761900 |
[1,0,0,3,0,5,6,7,15,19,36,41,77,100,156,230,317, 482,665,981,1354,1967,2710,3852,5363,7453,10373, 14287,19780,27022,37220,50583,69140,93693,127098, 171640,231469,311323,417627,559577,747122,996947, 1325872,1761900] |