n | a(n) |
---|---|
1 | 3 |
2 | 12 |
3 | 54 |
4 | 210 |
5 | 798 |
6 | 2850 |
7 | 10038 |
8 | 34410 |
9 | 116406 |
10 | 388362 |
11 | 1283430 |
12 | 4203786 |
13 | 13675038 |
14 | 44211570 |
15 | 142202574 |
16 | 455299242 |
17 | 1451997726 |
18 | 4614253122 |
19 | 14617620726 |
20 | 46177325994 |
21 | 145505603694 |
22 | 457437342546 |
23 | 1435074324006 |
24 | 4493508791754 |
25 | 14045385985902 |
[3,12,54,210,798,2850,10038,34410,116406,388362, 1283430,4203786,13675038,44211570,142202574, 455299242,1451997726,4614253122,14617620726, 46177325994,145505603694,457437342546, 1435074324006,4493508791754,14045385985902] |