n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 12 |
4 | 61 |
5 | 340 |
6 | 2070 |
7 | 13178 |
8 | 87115 |
9 | 590720 |
10 | 4089214 |
11 | 28766442 |
12 | 205072330 |
13 | 1478149486 |
14 | 10754615963 |
15 | 78878136418 |
16 | 582563752101 |
17 | 4328922702536 |
18 | 32341244773080 |
19 | 242781826475456 |
20 | 1830377795460438 |
[2,3,12,61,340,2070,13178,87115,590720,4089214, 28766442,205072330,1478149486,10754615963, 78878136418,582563752101,4328922702536, 32341244773080,242781826475456,1830377795460438] |