n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 27 |
3 | 98 |
4 | 315 |
5 | 924 |
6 | 2534 |
7 | 6588 |
8 | 16407 |
9 | 39430 |
10 | 91959 |
11 | 209034 |
12 | 464723 |
13 | 1013292 |
14 | 2171850 |
15 | 4584620 |
16 | 9546570 |
17 | 19635840 |
18 | 39940460 |
19 | 80421600 |
20 | 160437690 |
21 | 317354740 |
22 | 622844730 |
23 | 1213580820 |
24 | 2348773525 |
25 | 4517541378 |
26 | 8638447293 |
27 | 16428864606 |
28 | 31086197469 |
29 | 58539877020 |
[1,6,27,98,315,924,2534,6588,16407,39430,91959, 209034,464723,1013292,2171850,4584620,9546570, 19635840,39940460,80421600,160437690,317354740, 622844730,1213580820,2348773525,4517541378, 8638447293,16428864606,31086197469,58539877020] |