The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 4 |
| 4 | 0 |
| 5 | 0 |
| 6 | 12 |
| 7 | 0 |
| 8 | 0 |
| 9 | 32 |
| 10 | 96 |
| 11 | 0 |
| 12 | 80 |
| 13 | 960 |
| 14 | 0 |
| 15 | 192 |
| 16 | 5760 |
| 17 | 0 |
| 18 | 448 |
| 19 | 26880 |
| 20 | 4032 |
| 21 | 1024 |
| 22 | 107520 |
| 23 | 64512 |
| 24 | 2304 |
| 25 | 387072 |
| 26 | 580608 |
| 27 | 5120 |
| 28 | 1290240 |
| 29 | 3870720 |
| 30 | 149504 |
| 31 | 4055040 |
| 32 | 21288960 |
| 33 | 3065856 |
| 34 | 12165120 |
| 35 | 102187008 |
| 36 | 36548608 |
| 37 | 35143680 |
| 38 | 442810368 |
| 39 | 316407808 |
| 40 | 102715392 |
[1,0,0,4,0,0,12,0,0,32,96,0,80,960,0,192,5760,0, 448,26880,4032,1024,107520,64512,2304,387072, 580608,5120,1290240,3870720,149504,4055040, 21288960,3065856,12165120,102187008,36548608, 35143680,442810368,316407808,102715392] |