n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 14 |
5 | 78 |
6 | 622 |
7 | 6536 |
8 | 85598 |
9 | 1345210 |
10 | 24691358 |
11 | 518748492 |
12 | 12281130094 |
13 | 323584515590 |
14 | 9393074239694 |
15 | 297887000259088 |
16 | 10248191152060862 |
17 | 380165561528647410 |
18 | 15127415638330079806 |
19 | 642761421592044700820 |
[1,2,4,14,78,622,6536,85598,1345210,24691358, 518748492,12281130094,323584515590,9393074239694, 297887000259088,10248191152060862, 380165561528647410,15127415638330079806, 642761421592044700820] |