n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 14 |
4 | 90 |
5 | 438 |
6 | 3151 |
7 | 24390 |
8 | 204156 |
9 | 1833212 |
10 | 17301306 |
11 | 175936764 |
12 | 1870247133 |
13 | 20872753540 |
14 | 243478609605 |
15 | 2957875659062 |
16 | 37319273049382 |
17 | 487266892836348 |
18 | 6574891059415183 |
19 | 91475580555526776 |
20 | 1309960647920094337 |
21 | 19278546942842385994 |
22 | 291167370195970990704 |
23 | 4507447478297070537800 |
[1,2,4,14,90,438,3151,24390,204156,1833212, 17301306,175936764,1870247133,20872753540, 243478609605,2957875659062,37319273049382, 487266892836348,6574891059415183, 91475580555526776,1309960647920094337, 19278546942842385994,291167370195970990704, 4507447478297070537800] |