n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 12 |
6 | 26 |
7 | 54 |
8 | 112 |
9 | 226 |
10 | 460 |
11 | 930 |
12 | 1876 |
13 | 3780 |
14 | 7606 |
15 | 15288 |
16 | 30720 |
17 | 61680 |
18 | 123786 |
19 | 248346 |
20 | 498072 |
21 | 998636 |
22 | 2001826 |
23 | 4011942 |
24 | 8039072 |
25 | 16106124 |
26 | 32263876 |
27 | 64623330 |
28 | 129424236 |
29 | 259179060 |
30 | 518975176 |
31 | 1039104990 |
32 | 2080374784 |
33 | 4164816708 |
34 | 8337289456 |
[0,0,1,2,6,12,26,54,112,226,460,930,1876,3780, 7606,15288,30720,61680,123786,248346,498072, 998636,2001826,4011942,8039072,16106124,32263876, 64623330,129424236,259179060,518975176,1039104990, 2080374784,4164816708,8337289456] |