n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 84 |
3 | 2940 |
4 | 137228 |
5 | 7809680 |
6 | 517517212 |
7 | 38860889496 |
8 | 3248881861500 |
9 | 298704250964336 |
10 | 29928006672383280 |
11 | 3244628959712243628 |
12 | 378449007991303855532 |
13 | 47261928190105905687600 |
14 | 6293239981401396941576632 |
15 | 890249832854933140207681360 |
16 | 133355904852469516343820132852 |
[1,4,84,2940,137228,7809680,517517212,38860889496, 3248881861500,298704250964336,29928006672383280, 3244628959712243628,378449007991303855532, 47261928190105905687600,6293239981401396941576632, 890249832854933140207681360, 133355904852469516343820132852] |