n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 11 |
6 | 30 |
7 | 122 |
8 | 336 |
9 | 1412 |
10 | 15129 |
11 | 44561 |
12 | 417542 |
13 | 2479120 |
14 | 7540843 |
15 | 35983502 |
16 | 451454834 |
17 | 5313515136 |
18 | 16809858904 |
19 | 190077477328 |
20 | 1124302066470 |
21 | 3521811953565 |
22 | 38563707677633 |
23 | 240966297786218 |
24 | 3192420711942298 |
25 | 95433674596402663 |
26 | 567734580765228356 |
[1,1,2,4,11,30,122,336,1412,15129,44561,417542, 2479120,7540843,35983502,451454834,5313515136, 16809858904,190077477328,1124302066470, 3521811953565,38563707677633,240966297786218, 3192420711942298,95433674596402663, 567734580765228356] |