n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 43 |
4 | 250 |
5 | 1420 |
6 | 7990 |
7 | 44800 |
8 | 250900 |
9 | 1404700 |
10 | 7864000 |
11 | 44026000 |
12 | 246481000 |
13 | 1379950000 |
14 | 7725850000 |
15 | 43254430000 |
16 | 242167300000 |
17 | 1355815600000 |
18 | 7590769900000 |
19 | 42498250000000 |
20 | 237933871000000 |
21 | 1332114307000000 |
[1,7,43,250,1420,7990,44800,250900,1404700, 7864000,44026000,246481000,1379950000,7725850000, 43254430000,242167300000,1355815600000, 7590769900000,42498250000000,237933871000000, 1332114307000000] |