n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 2 |
7 | 3 |
8 | 4 |
9 | 9 |
10 | 28 |
11 | 113 |
12 | 1018 |
13 | 28505 |
14 | 3221066 |
15 | 3279045189 |
16 | 93469183112446 |
17 | 301070407771273987437 |
18 | 987223472152664180906141290594 |
19 | 92274971491542102812339702600558728264132925 |
[0,0,0,1,1,1,2,3,4,9,28,113,1018,28505,3221066, 3279045189,93469183112446,301070407771273987437, 987223472152664180906141290594, 92274971491542102812339702600558728264132925] |