n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 10 |
4 | 30 |
5 | 91 |
6 | 273 |
7 | 820 |
8 | 2460 |
9 | 7381 |
10 | 22143 |
11 | 66430 |
12 | 199290 |
13 | 597871 |
14 | 1793613 |
15 | 5380840 |
16 | 16142520 |
17 | 48427561 |
18 | 145282683 |
19 | 435848050 |
20 | 1307544150 |
21 | 3922632451 |
22 | 11767897353 |
23 | 35303692060 |
24 | 105911076180 |
25 | 317733228541 |
26 | 953199685623 |
[1,3,10,30,91,273,820,2460,7381,22143,66430, 199290,597871,1793613,5380840,16142520,48427561, 145282683,435848050,1307544150,3922632451, 11767897353,35303692060,105911076180,317733228541, 953199685623] |