n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 16 |
6 | 39 |
7 | 91 |
8 | 217 |
9 | 513 |
10 | 1216 |
11 | 2881 |
12 | 6825 |
13 | 16171 |
14 | 38311 |
15 | 90768 |
16 | 215047 |
17 | 509491 |
18 | 1207089 |
19 | 2859841 |
20 | 6775552 |
21 | 16052673 |
22 | 38032081 |
23 | 90105811 |
24 | 213479175 |
25 | 505776016 |
26 | 1198287271 |
27 | 2838988683 |
28 | 6726147337 |
29 | 15935624641 |
30 | 37754768064 |
[1,1,1,3,7,16,39,91,217,513,1216,2881,6825,16171, 38311,90768,215047,509491,1207089,2859841,6775552, 16052673,38032081,90105811,213479175,505776016, 1198287271,2838988683,6726147337,15935624641, 37754768064] |