n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 37 |
5 | 141 |
6 | 541 |
7 | 2080 |
8 | 8001 |
9 | 30781 |
10 | 118423 |
11 | 455610 |
12 | 1752877 |
13 | 6743881 |
14 | 25945881 |
15 | 99822160 |
16 | 384048001 |
17 | 1477556361 |
18 | 5684635243 |
19 | 21870622810 |
20 | 84143330517 |
21 | 323726495221 |
22 | 1245480100021 |
23 | 4791763116240 |
24 | 18435456144001 |
25 | 70927137880741 |
[1,1,3,10,37,141,541,2080,8001,30781,118423, 455610,1752877,6743881,25945881,99822160, 384048001,1477556361,5684635243,21870622810, 84143330517,323726495221,1245480100021, 4791763116240,18435456144001,70927137880741] |