n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 26 |
5 | 86 |
6 | 309 |
7 | 1108 |
8 | 4177 |
9 | 16043 |
10 | 62131 |
11 | 245624 |
12 | 988058 |
13 | 3974672 |
14 | 16249872 |
15 | 67146327 |
16 | 277391652 |
17 | 1159193515 |
18 | 4883667639 |
19 | 20554100144 |
20 | 87291612458 |
21 | 373042330747 |
22 | 1592243882405 |
23 | 6845720258023 |
24 | 29580989452406 |
25 | 127649661170533 |
26 | 554181473820419 |
27 | 2415949131968238 |
28 | 10517688992163295 |
[1,1,3,8,26,86,309,1108,4177,16043,62131,245624, 988058,3974672,16249872,67146327,277391652, 1159193515,4883667639,20554100144,87291612458, 373042330747,1592243882405,6845720258023, 29580989452406,127649661170533,554181473820419, 2415949131968238,10517688992163295] |