n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 16 |
4 | 91 |
5 | 546 |
6 | 5094 |
7 | 47306 |
8 | 561190 |
9 | 7098943 |
10 | 103345704 |
11 | 1622632638 |
12 | 28216141886 |
13 | 526858348514 |
14 | 10659286804538 |
15 | 230286817182060 |
16 | 5319206290975993 |
17 | 130370767029136518 |
18 | 3386434807625742926 |
19 | 92801587319328412310 |
20 | 2677967917777310591454 |
21 | 81124837170900250181072 |
[1,4,16,91,546,5094,47306,561190,7098943, 103345704,1622632638,28216141886,526858348514, 10659286804538,230286817182060,5319206290975993, 130370767029136518,3386434807625742926, 92801587319328412310,2677967917777310591454, 81124837170900250181072] |