n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 7 |
4 | 22 |
5 | 69 |
6 | 208 |
7 | 634 |
8 | 1903 |
9 | 5734 |
10 | 17210 |
11 | 51702 |
12 | 155107 |
13 | 465561 |
14 | 1396684 |
15 | 4190689 |
16 | 12572144 |
17 | 37718360 |
18 | 113155081 |
19 | 339471195 |
20 | 1018413586 |
21 | 3055258062 |
22 | 9165774828 |
23 | 27497376189 |
24 | 82492128568 |
25 | 247476542954 |
26 | 742429628932 |
27 | 2227289352360 |
28 | 6681868062822 |
29 | 20045605585809 |
[1,2,7,22,69,208,634,1903,5734,17210,51702,155107, 465561,1396684,4190689,12572144,37718360, 113155081,339471195,1018413586,3055258062, 9165774828,27497376189,82492128568,247476542954, 742429628932,2227289352360,6681868062822, 20045605585809] |