n | a(n) |
---|---|
2 | 0 |
3 | 1 |
4 | 1640 |
5 | 123744 |
6 | 1546356 |
7 | 9282128 |
8 | 37896264 |
9 | 121782952 |
10 | 331901924 |
11 | 801191922 |
12 | 1761200680 |
13 | 3592793804 |
14 | 6894127812 |
15 | 12569395174 |
[0,1,1640,123744,1546356,9282128,37896264, 121782952,331901924,801191922,1761200680, 3592793804,6894127812,12569395174] |