n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 37 |
5 | 581 |
6 | 13212 |
7 | 397090 |
8 | 14889577 |
9 | 669865615 |
10 | 35163845767 |
11 | 2109590735132 |
12 | 142351735998715 |
13 | 10668744913038902 |
14 | 879070919025078742 |
15 | 78967715485093873542 |
16 | 7679624492547098031089 |
17 | 803723903225549231819755 |
18 | 90059089612345241265831537 |
[1,1,1,4,37,581,13212,397090,14889577,669865615, 35163845767,2109590735132,142351735998715, 10668744913038902,879070919025078742, 78967715485093873542,7679624492547098031089, 803723903225549231819755, 90059089612345241265831537] |