n | a(n) |
---|---|
1 | 10 |
2 | 18 |
3 | 60 |
4 | 163 |
5 | 598 |
6 | 3411 |
7 | 11283 |
8 | 72578 |
9 | 404421 |
10 | 2220973 |
11 | 15323311 |
12 | 89098530 |
13 | 555805615 |
14 | 3439171493 |
15 | 20036872248 |
16 | 122952210402 |
17 | 718794479207 |
18 | 4313956945052 |
19 | 26242676909613 |
20 | 154481099979249 |
21 | 936900491409907 |
[10,18,60,163,598,3411,11283,72578,404421,2220973, 15323311,89098530,555805615,3439171493, 20036872248,122952210402,718794479207, 4313956945052,26242676909613,154481099979249, 936900491409907] |