n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 9 |
6 | 20 |
7 | 45 |
8 | 99 |
9 | 208 |
10 | 437 |
11 | 906 |
12 | 1862 |
13 | 3803 |
14 | 7732 |
15 | 15659 |
16 | 31629 |
17 | 63747 |
18 | 128258 |
19 | 257722 |
20 | 517339 |
21 | 1037652 |
22 | 2079984 |
23 | 4167325 |
24 | 8346204 |
25 | 16710572 |
26 | 33449695 |
27 | 66944254 |
28 | 133959021 |
29 | 268028868 |
30 | 536231903 |
31 | 1072737537 |
32 | 2145905285 |
33 | 4292486690 |
34 | 8586035993 |
35 | 17173742032 |
36 | 34350108745 |
37 | 68704342523 |
38 | 137415168084 |
[0,0,1,1,4,9,20,45,99,208,437,906,1862,3803,7732, 15659,31629,63747,128258,257722,517339,1037652, 2079984,4167325,8346204,16710572,33449695, 66944254,133959021,268028868,536231903,1072737537, 2145905285,4292486690,8586035993,17173742032, 34350108745,68704342523,137415168084] |