n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 90 |
3 | 594 |
4 | 3726 |
5 | 22842 |
6 | 138510 |
7 | 835434 |
8 | 5025726 |
9 | 30193722 |
10 | 181280430 |
11 | 1088036874 |
12 | 6529284126 |
13 | 39178893402 |
14 | 235082926350 |
15 | 1410526255914 |
16 | 8463243628926 |
17 | 50779720053882 |
18 | 304679095164270 |
19 | 1828076895508554 |
20 | 10968468346620126 |
[1,12,90,594,3726,22842,138510,835434,5025726, 30193722,181280430,1088036874,6529284126, 39178893402,235082926350,1410526255914, 8463243628926,50779720053882,304679095164270, 1828076895508554,10968468346620126] |