n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 38 |
5 | 133 |
6 | 512 |
7 | 2022 |
8 | 8128 |
9 | 33730 |
10 | 141324 |
11 | 602890 |
12 | 2601778 |
13 | 11334514 |
14 | 49900585 |
15 | 221172359 |
16 | 987885412 |
17 | 4439103756 |
18 | 20057110137 |
19 | 91101700558 |
20 | 415588883336 |
21 | 1904000032055 |
22 | 8755606765089 |
23 | 40402666357108 |
24 | 187042392647003 |
25 | 868419079537612 |
26 | 4043169630348568 |
27 | 18871591885594103 |
[1,1,4,10,38,133,512,2022,8128,33730,141324, 602890,2601778,11334514,49900585,221172359, 987885412,4439103756,20057110137,91101700558, 415588883336,1904000032055,8755606765089, 40402666357108,187042392647003,868419079537612, 4043169630348568,18871591885594103] |