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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 4 |
| 6 | 0 |
| 7 | 1 |
| 8 | 0 |
| 9 | 12 |
| 10 | 0 |
| 11 | 1 |
| 12 | 36 |
| 13 | 216 |
| 14 | 96 |
| 15 | 0 |
| 16 | 1 |
| 17 | 0 |
| 18 | 2700 |
| 19 | 0 |
| 20 | 480 |
| 21 | 0 |
| 22 | 1 |
| 23 | 400 |
| 24 | 54000 |
| 25 | 643680 |
| 26 | 116640 |
| 27 | 5760 |
| 28 | 0 |
| 29 | 1 |
| 30 | 0 |
| 31 | 1054200 |
| 32 | 0 |
| 33 | 190188000 |
| 34 | 0 |
| 35 | 40320 |
| 36 | 0 |
| 37 | 1 |
| 38 | 4900 |
| 39 | 20991600 |
| 40 | 12243840000 |
| 41 | 269568000000 |
| 42 | 128247235200 |
| 43 | 535610880 |
| 44 | 645120 |
| 45 | 0 |
| 46 | 1 |
| 47 | 0 |
| 48 | 445365900 |
[1,1,0,1,4,0,1,0,12,0,1,36,216,96,0,1,0,2700,0, 480,0,1,400,54000,643680,116640,5760,0,1,0, 1054200,0,190188000,0,40320,0,1,4900,20991600, 12243840000,269568000000,128247235200,535610880, 645120,0,1,0,445365900] |