n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 9 |
6 | 35 |
7 | 155 |
8 | 791 |
9 | 4529 |
10 | 28839 |
11 | 201939 |
12 | 1542739 |
13 | 12767689 |
14 | 113794603 |
15 | 1086657403 |
16 | 11068604847 |
17 | 119790363489 |
18 | 1372696498127 |
19 | 16603828720547 |
20 | 211406514019115 |
21 | 2826296899863929 |
22 | 39584082775592211 |
23 | 579600224535319371 |
[0,0,1,1,3,9,35,155,791,4529,28839,201939,1542739, 12767689,113794603,1086657403,11068604847, 119790363489,1372696498127,16603828720547, 211406514019115,2826296899863929, 39584082775592211,579600224535319371] |