n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 90 |
3 | 1680 |
4 | 34650 |
5 | 756756 |
6 | 17153136 |
7 | 399072960 |
8 | 9465511770 |
9 | 227873431500 |
10 | 5550996791340 |
11 | 136526995463040 |
12 | 3384731762521200 |
13 | 84478098072866400 |
14 | 2120572665910728000 |
15 | 53494979785374631680 |
16 | 1355345464406015082330 |
17 | 34469858696831179429500 |
18 | 879619727485803060256500 |
19 | 22514366432046593564460000 |
[1,6,90,1680,34650,756756,17153136,399072960, 9465511770,227873431500,5550996791340, 136526995463040,3384731762521200, 84478098072866400,2120572665910728000, 53494979785374631680,1355345464406015082330, 34469858696831179429500,879619727485803060256500, 22514366432046593564460000] |