n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 18 |
3 | 92 |
4 | 298 |
5 | 1444 |
6 | 4852 |
7 | 22840 |
8 | 78490 |
9 | 362580 |
10 | 1265564 |
11 | 5767688 |
12 | 20366596 |
13 | 91866984 |
14 | 327351336 |
15 | 1464522864 |
16 | 5257011066 |
17 | 23361650484 |
18 | 84371466636 |
19 | 372831130344 |
20 | 1353477992556 |
21 | 5952169844664 |
22 | 21704580414936 |
23 | 95051752387344 |
[1,6,18,92,298,1444,4852,22840,78490,362580, 1265564,5767688,20366596,91866984,327351336, 1464522864,5257011066,23361650484,84371466636, 372831130344,1353477992556,5952169844664, 21704580414936,95051752387344] |