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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 10 |
| 6 | 6 |
| 7 | 14 |
| 8 | 34 |
| 9 | 82 |
| 10 | 24 |
| 11 | 60 |
| 12 | 152 |
| 13 | 388 |
| 14 | 1000 |
| 15 | 120 |
| 16 | 312 |
| 17 | 816 |
| 18 | 2144 |
| 19 | 5656 |
| 20 | 14968 |
| 21 | 720 |
| 22 | 1920 |
| 23 | 5136 |
| 24 | 13776 |
| 25 | 37040 |
| 26 | 99808 |
| 27 | 269488 |
| 28 | 5040 |
| 29 | 13680 |
| 30 | 37200 |
| 31 | 101328 |
| 32 | 276432 |
| 33 | 755216 |
| 34 | 2066032 |
| 35 | 5659120 |
| 36 | 40320 |
| 37 | 110880 |
| 38 | 305280 |
| 39 | 841440 |
| 40 | 2321664 |
| 41 | 6412128 |
| 42 | 17725952 |
| 43 | 49045792 |
| 44 | 135819136 |
[1,1,1,2,4,10,6,14,34,82,24,60,152,388,1000,120, 312,816,2144,5656,14968,720,1920,5136,13776,37040, 99808,269488,5040,13680,37200,101328,276432, 755216,2066032,5659120,40320,110880,305280,841440, 2321664,6412128,17725952,49045792,135819136] |