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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 2 |
| 7 | 1 |
| 8 | 6 |
| 9 | 19 |
| 10 | 30 |
| 11 | 38 |
| 12 | 45 |
| 13 | 240 |
| 14 | 282 |
| 15 | 616 |
| 16 | 1075 |
| 17 | 1111 |
| 18 | 1578 |
| 19 | 2093 |
| 20 | 2176 |
| 21 | 4808 |
| 22 | 4931 |
| 23 | 5565 |
| 24 | 9924 |
| 25 | 10802 |
| 26 | 11554 |
| 27 | 22197 |
| 28 | 43068 |
| 29 | 55197 |
| 30 | 65968 |
| 31 | 107982 |
| 32 | 378354 |
| 33 | 429648 |
| 34 | 628824 |
| 35 | 699060 |
| 36 | 1488035 |
| 37 | 1510610 |
| 38 | 3486215 |
| 39 | 6733375 |
| 40 | 10497919 |
| 41 | 12018202 |
| 42 | 12982385 |
| 43 | 15201133 |
[0,0,0,0,1,2,1,6,19,30,38,45,240,282,616,1075, 1111,1578,2093,2176,4808,4931,5565,9924,10802, 11554,22197,43068,55197,65968,107982,378354, 429648,628824,699060,1488035,1510610,3486215, 6733375,10497919,12018202,12982385,15201133] |