n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 49 |
6 | 259 |
7 | 1593 |
8 | 11227 |
9 | 89537 |
10 | 799475 |
11 | 7917897 |
12 | 86257643 |
13 | 1025959345 |
14 | 13234866787 |
15 | 184078090137 |
16 | 2746061570587 |
17 | 43736283267137 |
18 | 740674930879379 |
19 | 13289235961616937 |
20 | 251805086618856395 |
21 | 5024288943352588369 |
22 | 105295629327037117123 |
[0,0,1,3,11,49,259,1593,11227,89537,799475, 7917897,86257643,1025959345,13234866787, 184078090137,2746061570587,43736283267137, 740674930879379,13289235961616937, 251805086618856395,5024288943352588369, 105295629327037117123] |