n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 50 |
5 | 278 |
6 | 1860 |
7 | 14793 |
8 | 138166 |
9 | 1494034 |
10 | 18422609 |
11 | 255359957 |
12 | 3929301362 |
13 | 66412322717 |
14 | 1222216175058 |
15 | 24314268876147 |
16 | 519701698551031 |
17 | 11874016816562299 |
18 | 288722141589331161 |
19 | 7442890569982739838 |
20 | 202733505298293899570 |
21 | 5817564888930184685708 |
[1,1,3,11,50,278,1860,14793,138166,1494034, 18422609,255359957,3929301362,66412322717, 1222216175058,24314268876147,519701698551031, 11874016816562299,288722141589331161, 7442890569982739838,202733505298293899570, 5817564888930184685708] |