n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 48 |
5 | 244 |
6 | 1420 |
7 | 9318 |
8 | 68019 |
9 | 545984 |
10 | 4772890 |
11 | 45079020 |
12 | 456958589 |
13 | 4943710161 |
14 | 56809133108 |
15 | 690510011727 |
16 | 8845800877774 |
17 | 119052630071419 |
18 | 1678622651280617 |
19 | 24733730857289108 |
20 | 379989034049167269 |
[1,1,3,11,48,244,1420,9318,68019,545984,4772890, 45079020,456958589,4943710161,56809133108, 690510011727,8845800877774,119052630071419, 1678622651280617,24733730857289108, 379989034049167269] |