n | a(n) |
---|---|
2 | 1 |
3 | 31 |
4 | 806 |
5 | 20306 |
6 | 508431 |
7 | 12714681 |
8 | 317886556 |
9 | 7947261556 |
10 | 198682027181 |
11 | 4967053120931 |
12 | 124176340230306 |
13 | 3104408566792806 |
14 | 77610214474995931 |
15 | 1940255363400777181 |
16 | 48506384092648824056 |
17 | 1212659602354367574056 |
18 | 30316490059049924214681 |
[1,31,806,20306,508431,12714681,317886556, 7947261556,198682027181,4967053120931, 124176340230306,3104408566792806, 77610214474995931,1940255363400777181, 48506384092648824056,1212659602354367574056, 30316490059049924214681] |