n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 8 |
5 | 39 |
6 | 60 |
7 | 111 |
8 | 343 |
9 | 861 |
10 | 2115 |
11 | 5016 |
12 | 13734 |
13 | 35912 |
14 | 82715 |
15 | 202744 |
16 | 522390 |
17 | 1333539 |
18 | 3288827 |
19 | 8106150 |
20 | 20528101 |
21 | 51563620 |
22 | 128020497 |
23 | 319184841 |
24 | 801237793 |
25 | 2009081101 |
26 | 5009247370 |
27 | 12506463250 |
28 | 31323071350 |
29 | 78380580569 |
30 | 195823809542 |
[0,0,1,8,39,60,111,343,861,2115,5016,13734,35912, 82715,202744,522390,1333539,3288827,8106150, 20528101,51563620,128020497,319184841,801237793, 2009081101,5009247370,12506463250,31323071350, 78380580569,195823809542] |