n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 21 |
4 | 340 |
5 | 7459 |
6 | 203191 |
7 | 6563082 |
8 | 244275977 |
9 | 10276093457 |
10 | 481793838446 |
11 | 24906702642493 |
12 | 1407549620790557 |
13 | 86342073783944457 |
14 | 5714570300215357125 |
15 | 405973384652872885758 |
16 | 30817592926484298640320 |
17 | 2489727584432844543366345 |
18 | 213310909894977172829098783 |
[1,1,2,21,340,7459,203191,6563082,244275977, 10276093457,481793838446,24906702642493, 1407549620790557,86342073783944457, 5714570300215357125,405973384652872885758, 30817592926484298640320,2489727584432844543366345, 213310909894977172829098783] |