n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 49 |
4 | 170 |
5 | 592 |
6 | 2077 |
7 | 7347 |
8 | 26195 |
9 | 94080 |
10 | 340136 |
11 | 1237090 |
12 | 4523615 |
13 | 16621732 |
14 | 61343875 |
15 | 227296695 |
16 | 845252415 |
17 | 3153656040 |
18 | 11802018060 |
19 | 44289999150 |
20 | 166635655320 |
21 | 628432803024 |
22 | 2375216296554 |
23 | 8995668139262 |
[1,4,14,49,170,592,2077,7347,26195,94080,340136, 1237090,4523615,16621732,61343875,227296695, 845252415,3153656040,11802018060,44289999150, 166635655320,628432803024,2375216296554, 8995668139262] |