n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 6 |
4 | 11 |
5 | 26 |
6 | 68 |
7 | 177 |
8 | 492 |
9 | 1403 |
10 | 4113 |
11 | 12149 |
12 | 36225 |
13 | 108268 |
14 | 324529 |
15 | 973163 |
16 | 2920533 |
17 | 8764041 |
18 | 26303715 |
19 | 78935398 |
20 | 236878491 |
21 | 710783343 |
[1,2,3,6,11,26,68,177,492,1403,4113,12149,36225, 108268,324529,973163,2920533,8764041,26303715, 78935398,236878491,710783343] |