n | a(n) |
---|---|
1 | 4 |
2 | 29 |
3 | 140 |
4 | 741 |
5 | 3853 |
6 | 19956 |
7 | 104096 |
8 | 541775 |
9 | 2819027 |
10 | 14671776 |
11 | 76356631 |
12 | 397392690 |
13 | 2068192977 |
14 | 10763659993 |
15 | 56018290276 |
16 | 291541126302 |
17 | 1517293977155 |
18 | 7896590852333 |
19 | 41096944195828 |
20 | 213884557644749 |
21 | 1113138825391146 |
[4,29,140,741,3853,19956,104096,541775,2819027, 14671776,76356631,397392690,2068192977, 10763659993,56018290276,291541126302, 1517293977155,7896590852333,41096944195828, 213884557644749,1113138825391146] |