n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 12 |
4 | 70 |
5 | 102 |
6 | 540 |
7 | 1090 |
8 | 1366 |
9 | 1626 |
10 | 4176 |
11 | 9010 |
12 | 9550 |
13 | 36912 |
14 | 43062 |
15 | 49680 |
16 | 57916 |
17 | 483610 |
18 | 877842 |
19 | 2215302 |
20 | 2704980 |
21 | 3598866 |
22 | 7973130 |
23 | 8530116 |
[2,6,12,70,102,540,1090,1366,1626,4176,9010,9550, 36912,43062,49680,57916,483610,877842,2215302, 2704980,3598866,7973130,8530116] |