n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 3 |
3 | 7 |
4 | 0 |
5 | 31 |
6 | 0 |
7 | 127 |
8 | 217 |
9 | 381 |
10 | 889 |
11 | 0 |
12 | 3937 |
13 | 8191 |
14 | 11811 |
15 | 27559 |
16 | 57337 |
17 | 131071 |
18 | 253921 |
19 | 524287 |
20 | 1040257 |
21 | 1777447 |
22 | 4063201 |
23 | 7281799 |
24 | 16646017 |
25 | 32247967 |
26 | 66584449 |
27 | 116522119 |
28 | 225735769 |
29 | 516026527 |
30 | 1073602561 |
31 | 2147483647 |
32 | 4294434817 |
33 | 7515217927 |
34 | 15032385529 |
[1,0,3,7,0,31,0,127,217,381,889,0,3937,8191,11811, 27559,57337,131071,253921,524287,1040257,1777447, 4063201,7281799,16646017,32247967,66584449, 116522119,225735769,516026527,1073602561, 2147483647,4294434817,7515217927,15032385529] |