n | a(n) |
---|---|
8 | 1 |
9 | 9 |
10 | 135 |
11 | 1650 |
12 | 23265 |
13 | 316602 |
14 | 4810806 |
15 | 73880235 |
16 | 1229123610 |
17 | 21174714990 |
18 | 388551217626 |
19 | 7431930745668 |
20 | 150102842702670 |
21 | 3162843042018660 |
22 | 69923464752835980 |
23 | 1611044465380180974 |
24 | 38759812951913315262 |
25 | 969843174518264324850 |
26 | 25246982138722170061950 |
[1,9,135,1650,23265,316602,4810806,73880235, 1229123610,21174714990,388551217626,7431930745668, 150102842702670,3162843042018660, 69923464752835980,1611044465380180974, 38759812951913315262,969843174518264324850, 25246982138722170061950] |