n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 5 |
8 | 13 |
9 | 29 |
10 | 70 |
11 | 165 |
12 | 409 |
13 | 1001 |
14 | 2505 |
15 | 6278 |
16 | 15904 |
17 | 40447 |
18 | 103567 |
19 | 266229 |
20 | 687668 |
21 | 1782573 |
22 | 4637731 |
23 | 12103112 |
24 | 31679212 |
25 | 83135973 |
26 | 218713492 |
27 | 576683119 |
28 | 1523740365 |
29 | 4033915677 |
30 | 10698680606 |
31 | 28422818782 |
32 | 75629586540 |
33 | 201539697208 |
34 | 537818080714 |
[1,0,0,1,1,3,5,13,29,70,165,409,1001,2505,6278, 15904,40447,103567,266229,687668,1782573,4637731, 12103112,31679212,83135973,218713492,576683119, 1523740365,4033915677,10698680606,28422818782, 75629586540,201539697208,537818080714] |