n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 34 |
4 | 156 |
5 | 815 |
6 | 4946 |
7 | 34706 |
8 | 277768 |
9 | 2500077 |
10 | 25000990 |
11 | 275011176 |
12 | 3300134476 |
13 | 42901748643 |
14 | 600624481562 |
15 | 9009367224110 |
16 | 144149875586576 |
17 | 2450547884972761 |
18 | 44109861929510838 |
19 | 838087376660707252 |
20 | 16761747533214146580 |
21 | 351996698197497079951 |
[1,2,8,34,156,815,4946,34706,277768,2500077, 25000990,275011176,3300134476,42901748643, 600624481562,9009367224110,144149875586576, 2450547884972761,44109861929510838, 838087376660707252,16761747533214146580, 351996698197497079951] |