n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 30 |
6 | 96 |
7 | 308 |
8 | 1052 |
9 | 3648 |
10 | 13003 |
11 | 47006 |
12 | 172605 |
13 | 640662 |
14 | 2402388 |
15 | 9082538 |
16 | 34590673 |
17 | 132566826 |
18 | 510904724 |
19 | 1978728356 |
20 | 7697565819 |
21 | 30063818314 |
22 | 117840547815 |
23 | 463405921002 |
24 | 1827768388175 |
25 | 7228779397588 |
26 | 28661434308095 |
27 | 113903170011006 |
28 | 453632267633931 |
[1,2,4,11,30,96,308,1052,3648,13003,47006,172605, 640662,2402388,9082538,34590673,132566826, 510904724,1978728356,7697565819,30063818314, 117840547815,463405921002,1827768388175, 7228779397588,28661434308095,113903170011006, 453632267633931] |