n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 21 |
3 | 57 |
4 | 133 |
5 | 281 |
6 | 554 |
7 | 1039 |
8 | 1878 |
9 | 3302 |
10 | 5686 |
11 | 9638 |
12 | 16143 |
13 | 26796 |
14 | 44179 |
15 | 72471 |
16 | 118435 |
17 | 193015 |
18 | 313920 |
19 | 509805 |
20 | 827036 |
21 | 1340636 |
22 | 2171996 |
23 | 3517532 |
24 | 5695053 |
25 | 9218786 |
26 | 14920769 |
27 | 24147269 |
28 | 39076593 |
29 | 63233317 |
30 | 102320326 |
[1,6,21,57,133,281,554,1039,1878,3302,5686,9638, 16143,26796,44179,72471,118435,193015,313920, 509805,827036,1340636,2171996,3517532,5695053, 9218786,14920769,24147269,39076593,63233317, 102320326] |