n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 7 |
6 | 33 |
7 | 106 |
8 | 563 |
9 | 1232 |
10 | 1795 |
11 | 8412 |
12 | 18619 |
13 | 27031 |
14 | 153774 |
15 | 6793087 |
16 | 6946861 |
17 | 34580531 |
18 | 41527392 |
19 | 117635315 |
20 | 512068652 |
21 | 629703967 |
22 | 1141772619 |
23 | 1771476586 |
24 | 9999155549 |
25 | 141759654272 |
26 | 151758809821 |
27 | 7729700145322 |
28 | 116097260989651 |
[0,1,2,5,7,33,106,563,1232,1795,8412,18619,27031, 153774,6793087,6946861,34580531,41527392, 117635315,512068652,629703967,1141772619, 1771476586,9999155549,141759654272,151758809821, 7729700145322,116097260989651] |