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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 3 |
| 6 | 0 |
| 7 | 15 |
| 8 | 30 |
| 9 | 16 |
| 10 | 0 |
| 11 | 244 |
| 12 | 564 |
| 13 | 444 |
| 14 | 125 |
| 15 | 0 |
| 16 | 6885 |
| 17 | 17540 |
| 18 | 16680 |
| 19 | 7320 |
| 20 | 1296 |
| 21 | 0 |
| 22 | 298326 |
| 23 | 817470 |
| 24 | 877740 |
| 25 | 478380 |
| 26 | 136590 |
| 27 | 16807 |
| 28 | 0 |
| 29 | 18377191 |
| 30 | 53352138 |
| 31 | 62582100 |
| 32 | 39142600 |
| 33 | 14146440 |
| 34 | 2873136 |
| 35 | 262144 |
| 36 | 0 |
| 37 | 1525885992 |
| 38 | 4645224472 |
[1,0,1,0,2,3,0,15,30,16,0,244,564,444,125,0,6885, 17540,16680,7320,1296,0,298326,817470,877740, 478380,136590,16807,0,18377191,53352138,62582100, 39142600,14146440,2873136,262144,0,1525885992, 4645224472] |