n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 40 |
3 | 468 |
4 | 5828 |
5 | 76260 |
6 | 1032444 |
7 | 14316584 |
8 | 202116108 |
9 | 2893451652 |
10 | 41886157564 |
11 | 611902123284 |
12 | 9007199254740 |
13 | 133439988963012 |
14 | 1987795697598012 |
15 | 29752813022112180 |
16 | 447193795726343004 |
17 | 6746237832670921768 |
18 | 102105221251235572188 |
[0,4,40,468,5828,76260,1032444,14316584,202116108, 2893451652,41886157564,611902123284,9007199254740, 133439988963012,1987795697598012, 29752813022112180,447193795726343004, 6746237832670921768,102105221251235572188] |