The OEIS is supported by the many generous donors to the OEIS Foundation.
A122105 as a simple table
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 11 |
| 5 | 101 |
| 6 | 932 |
| 7 | 9080 |
| 8 | 94852 |
| 9 | 1066644 |
| 10 | 12905784 |
| 11 | 167622984 |
| 12 | 2330016768 |
| 13 | 34551794304 |
| 14 | 544873631616 |
| 15 | 9110134903680 |
| 16 | 161038110977280 |
| 17 | 3001678242428160 |
| 18 | 58853489050759680 |
| 19 | 1211082030609016320 |
| 20 | 26101332373130496000 |
| 21 | 588033071962511616000 |
[0,0,0,1,11,101,932,9080,94852,1066644,12905784, 167622984,2330016768,34551794304,544873631616, 9110134903680,161038110977280,3001678242428160, 58853489050759680,1211082030609016320, 26101332373130496000,588033071962511616000] |