n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 19 |
4 | 72 |
5 | 289 |
6 | 996 |
7 | 3325 |
8 | 11415 |
9 | 39720 |
10 | 138689 |
11 | 483837 |
12 | 1682961 |
13 | 5845649 |
14 | 20310166 |
15 | 70604782 |
16 | 245504404 |
17 | 853649448 |
18 | 2967979455 |
19 | 10318546476 |
20 | 35873587105 |
21 | 124720541039 |
22 | 433616480871 |
23 | 1507558685202 |
24 | 5241330944265 |
[1,6,19,72,289,996,3325,11415,39720,138689,483837, 1682961,5845649,20310166,70604782,245504404, 853649448,2967979455,10318546476,35873587105, 124720541039,433616480871,1507558685202, 5241330944265] |