n | a(n) |
---|---|
1 | 3 |
2 | 12 |
3 | 55 |
4 | 318 |
5 | 2163 |
6 | 16952 |
7 | 150183 |
8 | 1483290 |
9 | 16153027 |
10 | 192234372 |
11 | 2481692343 |
12 | 34538108822 |
13 | 515428409715 |
14 | 8210201868528 |
15 | 139028223047143 |
16 | 2493848817565362 |
17 | 47236883312958723 |
18 | 942120664413581180 |
19 | 19735072617803491767 |
20 | 433187081497364626542 |
[3,12,55,318,2163,16952,150183,1483290,16153027, 192234372,2481692343,34538108822,515428409715, 8210201868528,139028223047143,2493848817565362, 47236883312958723,942120664413581180, 19735072617803491767,433187081497364626542] |