n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 10 |
3 | 60 |
4 | 364 |
5 | 2745 |
6 | 27246 |
7 | 346864 |
8 | 5422264 |
9 | 100449225 |
10 | 2149062490 |
11 | 52097910876 |
12 | 1410401518692 |
13 | 42153624499441 |
14 | 1378058477508454 |
15 | 48900582823143360 |
16 | 1871456346915007216 |
17 | 76821658841556480753 |
18 | 3366451935514051046802 |
19 | 156839738363103277783900 |
[0,1,10,60,364,2745,27246,346864,5422264, 100449225,2149062490,52097910876,1410401518692, 42153624499441,1378058477508454,48900582823143360, 1871456346915007216,76821658841556480753, 3366451935514051046802,156839738363103277783900] |