n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 3 |
5 | 25 |
6 | 145 |
7 | 756 |
8 | 3892 |
9 | 20644 |
10 | 114961 |
11 | 676533 |
12 | 4209513 |
13 | 27636258 |
14 | 190882952 |
15 | 1382925792 |
16 | 10480076627 |
17 | 82864738749 |
18 | 682076544033 |
19 | 5832741680788 |
20 | 51724157186816 |
21 | 474869814059620 |
22 | 4506715734253041 |
23 | 44152005846695761 |
24 | 445958869278028097 |
[0,0,0,0,3,25,145,756,3892,20644,114961,676533, 4209513,27636258,190882952,1382925792,10480076627, 82864738749,682076544033,5832741680788, 51724157186816,474869814059620,4506715734253041, 44152005846695761,445958869278028097] |