n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 9 |
6 | 21 |
7 | 49 |
8 | 117 |
9 | 295 |
10 | 761 |
11 | 1993 |
12 | 5261 |
13 | 14025 |
14 | 37699 |
15 | 102151 |
16 | 278587 |
17 | 764145 |
18 | 2106433 |
19 | 5832863 |
20 | 16217191 |
21 | 45255167 |
22 | 126708863 |
23 | 355848715 |
24 | 1002145705 |
25 | 2829479797 |
26 | 8007670701 |
27 | 22711890561 |
28 | 64547494347 |
29 | 183790615881 |
30 | 524239904367 |
31 | 1497786769295 |
[1,1,1,1,3,9,21,49,117,295,761,1993,5261,14025, 37699,102151,278587,764145,2106433,5832863, 16217191,45255167,126708863,355848715,1002145705, 2829479797,8007670701,22711890561,64547494347, 183790615881,524239904367,1497786769295] |