n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 9 |
6 | 18 |
7 | 41 |
8 | 89 |
9 | 185 |
10 | 388 |
11 | 810 |
12 | 1670 |
13 | 3435 |
14 | 7040 |
15 | 14360 |
16 | 29226 |
17 | 59347 |
18 | 120229 |
19 | 243166 |
20 | 491086 |
21 | 990446 |
22 | 1995410 |
23 | 4016259 |
24 | 8076960 |
25 | 16231746 |
26 | 32599774 |
27 | 65437945 |
28 | 131293192 |
29 | 263316897 |
30 | 527912140 |
31 | 1058061751 |
32 | 2120039885 |
33 | 4246934012 |
34 | 8505864640 |
[0,0,1,1,4,9,18,41,89,185,388,810,1670,3435,7040, 14360,29226,59347,120229,243166,491086,990446, 1995410,4016259,8076960,16231746,32599774, 65437945,131293192,263316897,527912140,1058061751, 2120039885,4246934012,8505864640] |