n | a(n) |
---|---|
1 | 3 |
2 | 120 |
3 | 404 |
4 | 2342 |
5 | 14568 |
6 | 85222 |
7 | 532401 |
8 | 3294736 |
9 | 20347911 |
10 | 126428149 |
11 | 783992331 |
12 | 4863257013 |
13 | 30176562361 |
14 | 187222566440 |
15 | 1161599360151 |
16 | 7207152227790 |
17 | 44716564625643 |
18 | 277441946632944 |
19 | 1721383218868835 |
20 | 10680278160407538 |
[3,120,404,2342,14568,85222,532401,3294736, 20347911,126428149,783992331,4863257013, 30176562361,187222566440,1161599360151, 7207152227790,44716564625643,277441946632944, 1721383218868835,10680278160407538] |