n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 13 |
4 | 49 |
5 | 181 |
6 | 597 |
7 | 2166 |
8 | 7592 |
9 | 26835 |
10 | 95590 |
11 | 339475 |
12 | 1211024 |
13 | 4324913 |
14 | 15465952 |
15 | 55398468 |
16 | 198646230 |
17 | 713134270 |
18 | 2562757415 |
19 | 9218114300 |
20 | 33185957425 |
21 | 119566240848 |
22 | 431102833455 |
23 | 1555423251527 |
24 | 5615525795887 |
25 | 20285623430206 |
26 | 73320521305274 |
27 | 265147098624058 |
28 | 959309368316993 |
29 | 3472389521265649 |
[0,6,13,49,181,597,2166,7592,26835,95590,339475, 1211024,4324913,15465952,55398468,198646230, 713134270,2562757415,9218114300,33185957425, 119566240848,431102833455,1555423251527, 5615525795887,20285623430206,73320521305274, 265147098624058,959309368316993,3472389521265649] |