n | a(n) |
---|---|
1 | 4 |
2 | 12 |
3 | 44 |
4 | 344 |
5 | 33328 |
6 | 58616531552 |
7 | 263752837930654539573558624 |
8 | 5521060336920386409400918079935910963482577804036340308751264 |
[4,12,44,344,33328,58616531552, 263752837930654539573558624, 55210603369203864094009180799359109634825778040363\ 40308751264] |