n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 5 |
7 | 9 |
8 | 13 |
9 | 39 |
10 | 87 |
11 | 157 |
12 | 389 |
13 | 923 |
14 | 1899 |
15 | 4426 |
16 | 10582 |
17 | 23414 |
18 | 54022 |
19 | 128643 |
20 | 295735 |
21 | 686881 |
22 | 1631513 |
23 | 3825456 |
24 | 8974024 |
25 | 21330400 |
26 | 50550032 |
27 | 119644037 |
28 | 285176865 |
29 | 680215735 |
30 | 1621245503 |
31 | 3878312658 |
32 | 9293056066 |
33 | 22267588692 |
34 | 53463982624 |
[1,0,0,1,1,1,5,9,13,39,87,157,389,923,1899,4426, 10582,23414,54022,128643,295735,686881,1631513, 3825456,8974024,21330400,50550032,119644037, 285176865,680215735,1621245503,3878312658, 9293056066,22267588692,53463982624] |