n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 7 |
4 | 21 |
5 | 48 |
6 | 118 |
7 | 222 |
8 | 527 |
9 | 1370 |
10 | 3336 |
11 | 7717 |
12 | 17897 |
13 | 41296 |
14 | 98631 |
15 | 236602 |
16 | 554717 |
17 | 1304489 |
18 | 3078621 |
19 | 7242849 |
20 | 17138388 |
21 | 40496052 |
22 | 95320672 |
23 | 224944921 |
24 | 530817100 |
25 | 1251705990 |
26 | 2954749967 |
27 | 6970501275 |
28 | 16438448824 |
29 | 38788768683 |
30 | 91508873268 |
[1,1,7,21,48,118,222,527,1370,3336,7717,17897, 41296,98631,236602,554717,1304489,3078621,7242849, 17138388,40496052,95320672,224944921,530817100, 1251705990,2954749967,6970501275,16438448824, 38788768683,91508873268] |