n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 57 |
4 | 748 |
5 | 12565 |
6 | 257526 |
7 | 6232765 |
8 | 173980920 |
9 | 5502613833 |
10 | 194477548330 |
11 | 7596028355641 |
12 | 324920533473108 |
13 | 15106155118606045 |
14 | 758463525318426942 |
15 | 40901033617318501845 |
16 | 2357682497456804486896 |
17 | 144670077586483815863569 |
18 | 9414952083720893890165842 |
19 | 647715776085173413399687633 |
[1,1,6,57,748,12565,257526,6232765,173980920, 5502613833,194477548330,7596028355641, 324920533473108,15106155118606045, 758463525318426942,40901033617318501845, 2357682497456804486896,144670077586483815863569, 9414952083720893890165842, 647715776085173413399687633] |