n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 6 |
5 | 20 |
6 | 50 |
7 | 112 |
8 | 238 |
9 | 492 |
10 | 1002 |
11 | 2024 |
12 | 4070 |
13 | 8164 |
14 | 16354 |
15 | 32736 |
16 | 65502 |
17 | 131036 |
18 | 262106 |
19 | 524248 |
20 | 1048534 |
21 | 2097108 |
22 | 4194258 |
23 | 8388560 |
24 | 16777166 |
25 | 33554380 |
26 | 67108810 |
27 | 134217672 |
28 | 268435398 |
29 | 536870852 |
30 | 1073741762 |
[0,0,0,0,6,20,50,112,238,492,1002,2024,4070,8164, 16354,32736,65502,131036,262106,524248,1048534, 2097108,4194258,8388560,16777166,33554380, 67108810,134217672,268435398,536870852,1073741762] |