n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 38 |
4 | 353 |
5 | 4316 |
6 | 64535 |
7 | 1140539 |
8 | 23256804 |
9 | 537441242 |
10 | 13880477011 |
11 | 396218076728 |
12 | 12386985584176 |
13 | 420923890579262 |
14 | 15447592770126360 |
15 | 608903758014263549 |
16 | 25656487848259583961 |
17 | 1150788495459483630200 |
18 | 54745172171004903538415 |
[2,6,38,353,4316,64535,1140539,23256804,537441242, 13880477011,396218076728,12386985584176, 420923890579262,15447592770126360, 608903758014263549,25656487848259583961, 1150788495459483630200,54745172171004903538415] |