n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 33 |
5 | 142 |
6 | 742 |
7 | 4454 |
8 | 30516 |
9 | 233574 |
10 | 1972430 |
11 | 18190806 |
12 | 181774873 |
13 | 1955268162 |
14 | 22516241557 |
15 | 276294103003 |
16 | 3598106433662 |
17 | 49551992313623 |
18 | 719398127720459 |
19 | 10979514511427858 |
20 | 175716291405379723 |
21 | 2942195925987952412 |
22 | 51436169813668249174 |
23 | 937106275320950472387 |
24 | 17761791825490936694507 |
[1,1,3,9,33,142,742,4454,30516,233574,1972430, 18190806,181774873,1955268162,22516241557, 276294103003,3598106433662,49551992313623, 719398127720459,10979514511427858, 175716291405379723,2942195925987952412, 51436169813668249174,937106275320950472387, 17761791825490936694507] |