n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 14 |
4 | 28 |
5 | 98 |
6 | 447 |
7 | 1653 |
8 | 6507 |
9 | 27374 |
10 | 111866 |
11 | 455776 |
12 | 1879650 |
13 | 7732294 |
14 | 31739780 |
15 | 130516126 |
16 | 536728543 |
17 | 2206092839 |
18 | 9069307066 |
19 | 37287485232 |
20 | 153290332616 |
21 | 630187059733 |
22 | 2590803232685 |
23 | 10651107068004 |
24 | 43787867995065 |
[1,4,14,28,98,447,1653,6507,27374,111866,455776, 1879650,7732294,31739780,130516126,536728543, 2206092839,9069307066,37287485232,153290332616, 630187059733,2590803232685,10651107068004, 43787867995065] |