n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 19 |
5 | 90 |
6 | 524 |
7 | 3599 |
8 | 28342 |
9 | 251532 |
10 | 2483878 |
11 | 27012164 |
12 | 320769441 |
13 | 4129906549 |
14 | 57302453361 |
15 | 852373993745 |
16 | 13531437150693 |
17 | 228343001917932 |
18 | 4081631159283028 |
19 | 77040788131467136 |
20 | 1531185664112909315 |
[1,1,2,5,19,90,524,3599,28342,251532,2483878, 27012164,320769441,4129906549,57302453361, 852373993745,13531437150693,228343001917932, 4081631159283028,77040788131467136, 1531185664112909315] |