n | a(n) |
---|---|
1 | 3 |
2 | 8 |
3 | 21 |
4 | 56 |
5 | 150 |
6 | 408 |
7 | 1099 |
8 | 2984 |
9 | 8109 |
10 | 22030 |
11 | 59884 |
12 | 162756 |
13 | 442416 |
14 | 1202614 |
15 | 3269025 |
16 | 8886112 |
17 | 24154960 |
18 | 65659986 |
19 | 178482314 |
20 | 485165200 |
21 | 1318815750 |
22 | 3584912848 |
23 | 9744803461 |
24 | 26489122152 |
25 | 72004899350 |
26 | 195729609452 |
[3,8,21,56,150,408,1099,2984,8109,22030,59884, 162756,442416,1202614,3269025,8886112,24154960, 65659986,178482314,485165200,1318815750, 3584912848,9744803461,26489122152,72004899350, 195729609452] |