n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 5 |
4 | 31 |
5 | 200 |
6 | 1351 |
7 | 9430 |
8 | 67531 |
9 | 493505 |
10 | 3665981 |
11 | 27602081 |
12 | 210179437 |
13 | 1615820402 |
14 | 12524590873 |
15 | 97775503808 |
16 | 768083233899 |
17 | 6067097140799 |
18 | 48159634951855 |
19 | 383965003803985 |
20 | 3073379977522321 |
21 | 24688458872260007 |
22 | 198968304164411309 |
[1,0,1,5,31,200,1351,9430,67531,493505,3665981, 27602081,210179437,1615820402,12524590873, 97775503808,768083233899,6067097140799, 48159634951855,383965003803985,3073379977522321, 24688458872260007,198968304164411309] |