n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 21 |
3 | 210 |
4 | 2485 |
5 | 31878 |
6 | 427350 |
7 | 5891028 |
8 | 82824885 |
9 | 1181976510 |
10 | 17067482146 |
11 | 248817506028 |
12 | 3656231188246 |
13 | 54086245380300 |
14 | 804670817838300 |
15 | 12030722583033960 |
16 | 180648817921816245 |
17 | 2722858996178147310 |
18 | 41179040361190612650 |
19 | 624643836563467851900 |
[1,3,21,210,2485,31878,427350,5891028,82824885, 1181976510,17067482146,248817506028,3656231188246, 54086245380300,804670817838300,12030722583033960, 180648817921816245,2722858996178147310, 41179040361190612650,624643836563467851900] |