n | a(n) |
---|---|
5 | 1 |
6 | 5 |
7 | 24 |
8 | 104 |
9 | 438 |
10 | 1796 |
11 | 7238 |
12 | 28848 |
13 | 113518 |
14 | 444278 |
15 | 1720384 |
16 | 6643492 |
17 | 25421620 |
18 | 97136712 |
19 | 368280210 |
20 | 1395104236 |
21 | 5250325378 |
22 | 19746342212 |
23 | 73863421894 |
24 | 276113486146 |
25 | 1027609657470 |
26 | 3821478801772 |
27 | 14161346139866 |
28 | 52428406903688 |
29 | 193568833452364 |
30 | 713860635606784 |
[1,5,24,104,438,1796,7238,28848,113518,444278, 1720384,6643492,25421620,97136712,368280210, 1395104236,5250325378,19746342212,73863421894, 276113486146,1027609657470,3821478801772, 14161346139866,52428406903688,193568833452364, 713860635606784] |