n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 9 |
3 | 50 |
4 | 203 |
5 | 1081 |
6 | 5491 |
7 | 30100 |
8 | 165841 |
9 | 941019 |
10 | 5401905 |
11 | 31489071 |
12 | 185415573 |
13 | 1102594901 |
14 | 6608330597 |
15 | 39889119774 |
16 | 242247852507 |
17 | 1479208979061 |
18 | 9075878125131 |
19 | 55927537029301 |
20 | 345980015040103 |
21 | 2147862197235447 |
[1,6,9,50,203,1081,5491,30100,165841,941019, 5401905,31489071,185415573,1102594901,6608330597, 39889119774,242247852507,1479208979061, 9075878125131,55927537029301,345980015040103, 2147862197235447] |