n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 3 |
4 | 16 |
5 | 60 |
6 | 240 |
7 | 1008 |
8 | 4096 |
9 | 16320 |
10 | 65280 |
11 | 261888 |
12 | 1048576 |
13 | 4193280 |
14 | 16773120 |
15 | 67104768 |
16 | 268435456 |
17 | 1073725440 |
18 | 4294901760 |
19 | 17179803648 |
20 | 68719476736 |
21 | 274877644800 |
22 | 1099510579200 |
23 | 4398045462528 |
24 | 17592186044416 |
25 | 70368739983360 |
26 | 281474959933440 |
27 | 1125899890065408 |
28 | 4503599627370496 |
29 | 18014398442373120 |
[0,0,3,16,60,240,1008,4096,16320,65280,261888, 1048576,4193280,16773120,67104768,268435456, 1073725440,4294901760,17179803648,68719476736, 274877644800,1099510579200,4398045462528, 17592186044416,70368739983360,281474959933440, 1125899890065408,4503599627370496, 18014398442373120] |