n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 9 |
5 | 39 |
6 | 120 |
7 | 300 |
8 | 645 |
9 | 1261 |
10 | 2262 |
11 | 3825 |
12 | 6160 |
13 | 9471 |
14 | 14178 |
15 | 20376 |
16 | 28965 |
17 | 39600 |
18 | 54066 |
19 | 71145 |
20 | 94248 |
21 | 120140 |
22 | 155310 |
23 | 193116 |
24 | 244560 |
25 | 297819 |
26 | 370860 |
27 | 443710 |
28 | 544554 |
29 | 641655 |
30 | 778458 |
31 | 904800 |
32 | 1085445 |
33 | 1248762 |
34 | 1483308 |
35 | 1688052 |
36 | 1991515 |
37 | 2244375 |
38 | 2626380 |
[0,0,1,9,39,120,300,645,1261,2262,3825,6160,9471, 14178,20376,28965,39600,54066,71145,94248,120140, 155310,193116,244560,297819,370860,443710,544554, 641655,778458,904800,1085445,1248762,1483308, 1688052,1991515,2244375,2626380] |