n | a(n) |
---|---|
0 | 3 |
1 | 14 |
2 | 70 |
3 | 364 |
4 | 1932 |
5 | 10360 |
6 | 55832 |
7 | 301616 |
8 | 1631280 |
9 | 8827616 |
10 | 47783008 |
11 | 258677440 |
12 | 1400457408 |
13 | 7582175104 |
14 | 41050997120 |
15 | 222257525504 |
16 | 1203346244352 |
17 | 6515164597760 |
18 | 35274469361152 |
19 | 190983450520576 |
20 | 1034025033108480 |
[3,14,70,364,1932,10360,55832,301616,1631280, 8827616,47783008,258677440,1400457408,7582175104, 41050997120,222257525504,1203346244352, 6515164597760,35274469361152,190983450520576, 1034025033108480] |