n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 30 |
4 | 364 |
5 | 6233 |
6 | 139008 |
7 | 3833052 |
8 | 126105168 |
9 | 4824243516 |
10 | 210489178476 |
11 | 10318212622770 |
12 | 561491367744672 |
13 | 33588989930164050 |
14 | 2190978413703916624 |
15 | 154771816676784778818 |
16 | 11771103512077651149912 |
17 | 959000166676677798631894 |
[1,4,30,364,6233,139008,3833052,126105168, 4824243516,210489178476,10318212622770, 561491367744672,33588989930164050, 2190978413703916624,154771816676784778818, 11771103512077651149912,959000166676677798631894] |