n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 23 |
6 | 53 |
7 | 115 |
8 | 241 |
9 | 495 |
10 | 1005 |
11 | 2027 |
12 | 4073 |
13 | 8167 |
14 | 16357 |
15 | 32739 |
16 | 65505 |
17 | 131039 |
18 | 262109 |
19 | 524251 |
20 | 1048537 |
21 | 2097111 |
22 | 4194261 |
23 | 8388563 |
24 | 16777169 |
[0,1,3,9,23,53,115,241,495,1005,2027,4073,8167, 16357,32739,65505,131039,262109,524251,1048537, 2097111,4194261,8388563,16777169] |