n | a(n) |
---|---|
4 | 1 |
5 | 4 |
6 | 14 |
7 | 46 |
8 | 145 |
9 | 446 |
10 | 1349 |
11 | 4034 |
12 | 11966 |
13 | 35290 |
14 | 103642 |
15 | 303458 |
16 | 886548 |
17 | 2585922 |
18 | 7534245 |
19 | 21934524 |
20 | 63826041 |
21 | 185668816 |
22 | 540034074 |
23 | 1570719570 |
24 | 4568920029 |
25 | 13292253106 |
26 | 38679350746 |
27 | 112583530784 |
28 | 327793747775 |
29 | 954702193796 |
[1,4,14,46,145,446,1349,4034,11966,35290,103642, 303458,886548,2585922,7534245,21934524,63826041, 185668816,540034074,1570719570,4568920029, 13292253106,38679350746,112583530784,327793747775, 954702193796] |