n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 18 |
6 | 78 |
7 | 522 |
8 | 6178 |
9 | 137352 |
10 | 6002584 |
11 | 509498932 |
12 | 82545586656 |
13 | 25251015686776 |
14 | 14527077828617744 |
15 | 15713242984902154384 |
16 | 32000507852263779299344 |
17 | 122967932076766466347469888 |
18 | 893788862572805850273939095424 |
19 | 12318904626562502262191503745716384 |
[1,1,2,6,18,78,522,6178,137352,6002584,509498932, 82545586656,25251015686776,14527077828617744, 15713242984902154384,32000507852263779299344, 122967932076766466347469888, 893788862572805850273939095424, 12318904626562502262191503745716384] |