n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 37 |
4 | 123 |
5 | 411 |
6 | 1371 |
7 | 4572 |
8 | 15241 |
9 | 50805 |
10 | 169350 |
11 | 564502 |
12 | 1881676 |
13 | 6272254 |
14 | 20907515 |
15 | 69691719 |
16 | 232305731 |
17 | 774352437 |
18 | 2581174791 |
19 | 8603915972 |
20 | 28679719907 |
21 | 95599066359 |
22 | 318663554532 |
23 | 1062211848441 |
24 | 3540706161472 |
[1,3,11,37,123,411,1371,4572,15241,50805,169350, 564502,1881676,6272254,20907515,69691719, 232305731,774352437,2581174791,8603915972, 28679719907,95599066359,318663554532, 1062211848441,3540706161472] |