n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 12 |
4 | 42 |
5 | 112 |
6 | 252 |
7 | 504 |
8 | 924 |
9 | 1584 |
10 | 2574 |
11 | 4004 |
12 | 6006 |
13 | 8736 |
14 | 12376 |
15 | 17136 |
16 | 23256 |
17 | 31008 |
18 | 40698 |
19 | 52668 |
20 | 67298 |
21 | 85008 |
22 | 106260 |
23 | 131560 |
24 | 161460 |
25 | 196560 |
26 | 237510 |
27 | 285012 |
28 | 339822 |
29 | 402752 |
30 | 474672 |
31 | 556512 |
32 | 649264 |
33 | 753984 |
34 | 871794 |
35 | 1003884 |
36 | 1151514 |
37 | 1316016 |
38 | 1498796 |
[0,2,12,42,112,252,504,924,1584,2574,4004,6006, 8736,12376,17136,23256,31008,40698,52668,67298, 85008,106260,131560,161460,196560,237510,285012, 339822,402752,474672,556512,649264,753984,871794, 1003884,1151514,1316016,1498796] |