n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 13 |
4 | 52 |
5 | 264 |
6 | 1589 |
7 | 11123 |
8 | 88989 |
9 | 800902 |
10 | 8009022 |
11 | 88099244 |
12 | 1057190930 |
13 | 13743482102 |
14 | 192408749440 |
15 | 2886131241604 |
16 | 46178099865665 |
17 | 785027697716317 |
18 | 14130498558893720 |
19 | 268479472618980693 |
20 | 5369589452379613862 |
[2,4,13,52,264,1589,11123,88989,800902,8009022, 88099244,1057190930,13743482102,192408749440, 2886131241604,46178099865665,785027697716317, 14130498558893720,268479472618980693, 5369589452379613862] |