n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 182 |
4 | 737 |
5 | 1656 |
6 | 66977 |
7 | 135610 |
8 | 609417 |
9 | 12323950 |
10 | 49905217 |
11 | 112134384 |
12 | 4535280577 |
13 | 9182695538 |
14 | 41266062729 |
15 | 834503950118 |
16 | 3379281863201 |
17 | 7593067676520 |
18 | 307101988924001 |
19 | 621797045524522 |
20 | 2794290171022089 |
21 | 56507600465966302 |
[1,2,9,182,737,1656,66977,135610,609417,12323950, 49905217,112134384,4535280577,9182695538, 41266062729,834503950118,3379281863201, 7593067676520,307101988924001,621797045524522, 2794290171022089,56507600465966302] |