n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 44 |
4 | 134 |
5 | 400 |
6 | 1184 |
7 | 3488 |
8 | 10252 |
9 | 30096 |
10 | 88296 |
11 | 258960 |
12 | 759368 |
13 | 2226560 |
14 | 6528256 |
15 | 19140352 |
16 | 56117392 |
17 | 164528960 |
18 | 482376160 |
19 | 1414257856 |
20 | 4146398048 |
21 | 12156629760 |
22 | 35641443840 |
23 | 104495439360 |
[1,4,14,44,134,400,1184,3488,10252,30096,88296, 258960,759368,2226560,6528256,19140352,56117392, 164528960,482376160,1414257856,4146398048, 12156629760,35641443840,104495439360] |