n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 50 |
4 | 485 |
5 | 5130 |
6 | 57391 |
7 | 667777 |
8 | 7999095 |
9 | 97986680 |
10 | 1221813880 |
11 | 15456556791 |
12 | 197887386913 |
13 | 2559189842240 |
14 | 33383097891135 |
15 | 438714241508615 |
16 | 5803049210371375 |
17 | 77199163872173757 |
18 | 1032215519193531310 |
19 | 13864180990526161995 |
20 | 186975433988014039830 |
[1,1,6,50,485,5130,57391,667777,7999095,97986680, 1221813880,15456556791,197887386913,2559189842240, 33383097891135,438714241508615,5803049210371375, 77199163872173757,1032215519193531310, 13864180990526161995,186975433988014039830] |