n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 17 |
5 | 43 |
6 | 108 |
7 | 280 |
8 | 727 |
9 | 1875 |
10 | 4832 |
11 | 12470 |
12 | 32191 |
13 | 83075 |
14 | 214372 |
15 | 553214 |
16 | 1427673 |
17 | 3684333 |
18 | 9507936 |
19 | 24536616 |
20 | 63320419 |
21 | 163407771 |
22 | 421697922 |
23 | 1088253936 |
24 | 2808400703 |
25 | 7247494517 |
26 | 18703234038 |
27 | 48266468208 |
28 | 124558777387 |
29 | 321442392689 |
30 | 829529751892 |
[1,1,2,6,17,43,108,280,727,1875,4832,12470,32191, 83075,214372,553214,1427673,3684333,9507936, 24536616,63320419,163407771,421697922,1088253936, 2808400703,7247494517,18703234038,48266468208, 124558777387,321442392689,829529751892] |