n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 2 |
4 | 3 |
5 | 9 |
6 | 16 |
7 | 35 |
8 | 69 |
9 | 148 |
10 | 271 |
11 | 628 |
12 | 1167 |
13 | 2629 |
14 | 4830 |
15 | 10597 |
16 | 20083 |
17 | 42928 |
18 | 81579 |
19 | 174223 |
20 | 331314 |
21 | 701382 |
22 | 1340756 |
23 | 2825575 |
24 | 5422454 |
25 | 11361615 |
26 | 21873923 |
27 | 45673361 |
28 | 88161666 |
29 | 183458213 |
30 | 354899159 |
31 | 736343490 |
32 | 1427495050 |
33 | 2954560104 |
[0,0,2,3,9,16,35,69,148,271,628,1167,2629,4830, 10597,20083,42928,81579,174223,331314,701382, 1340756,2825575,5422454,11361615,21873923, 45673361,88161666,183458213,354899159,736343490, 1427495050,2954560104] |