n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 21 |
3 | 129 |
4 | 1029 |
5 | 7765 |
6 | 59257 |
7 | 450924 |
8 | 3435392 |
9 | 26160354 |
10 | 199243634 |
11 | 1517411733 |
12 | 11556549312 |
13 | 88013947545 |
14 | 670309228276 |
15 | 5105035683160 |
16 | 38879655193542 |
17 | 296105186372225 |
18 | 2255119850966932 |
19 | 17174861374796123 |
20 | 130802743517191075 |
21 | 996186073044886758 |
[1,1,21,129,1029,7765,59257,450924,3435392, 26160354,199243634,1517411733,11556549312, 88013947545,670309228276,5105035683160, 38879655193542,296105186372225,2255119850966932, 17174861374796123,130802743517191075, 996186073044886758] |