n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 11 |
4 | 42 |
5 | 162 |
6 | 627 |
7 | 2430 |
8 | 9423 |
9 | 36549 |
10 | 141777 |
11 | 549990 |
12 | 2133594 |
13 | 8276985 |
14 | 32109534 |
15 | 124565121 |
16 | 483235875 |
17 | 1874657763 |
18 | 7272519066 |
19 | 28212902154 |
20 | 109448714619 |
21 | 424593725526 |
22 | 1647162628047 |
23 | 6389978382405 |
24 | 24789187818585 |
[1,3,11,42,162,627,2430,9423,36549,141777,549990, 2133594,8276985,32109534,124565121,483235875, 1874657763,7272519066,28212902154,109448714619, 424593725526,1647162628047,6389978382405, 24789187818585] |