n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | 12 |
5 | 13 |
6 | 90 |
7 | 121 |
8 | 3457 |
9 | 7372 |
10 | 42530 |
11 | 147081 |
12 | 348753 |
13 | 1185480 |
14 | 17262610 |
15 | 28408922 |
16 | 87175278 |
17 | 120293961 |
18 | 344697955 |
19 | 634418862 |
20 | 3889219736 |
21 | 8965899278 |
22 | 9695659687 |
23 | 18962955420 |
24 | 27004920068 |
25 | 67070581522 |
[1,2,2,12,13,90,121,3457,7372,42530,147081,348753, 1185480,17262610,28408922,87175278,120293961, 344697955,634418862,3889219736,8965899278, 9695659687,18962955420,27004920068,67070581522] |