n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 50 |
4 | 266 |
5 | 1452 |
6 | 8074 |
7 | 45474 |
8 | 258570 |
9 | 1481108 |
10 | 8533660 |
11 | 49402850 |
12 | 287134346 |
13 | 1674425300 |
14 | 9792273690 |
15 | 57407789550 |
16 | 337281021450 |
17 | 1985342102964 |
18 | 11706001102180 |
19 | 69124774458092 |
20 | 408737856117916 |
21 | 2419833655003752 |
22 | 14341910428953018 |
23 | 85087759173024870 |
[1,2,10,50,266,1452,8074,45474,258570,1481108, 8533660,49402850,287134346,1674425300,9792273690, 57407789550,337281021450,1985342102964, 11706001102180,69124774458092,408737856117916, 2419833655003752,14341910428953018, 85087759173024870] |