n | a(n) |
---|---|
0 | 0 |
1 | 21 |
2 | 312 |
3 | 4365 |
4 | 60816 |
5 | 847077 |
6 | 11798280 |
7 | 164328861 |
8 | 2288805792 |
9 | 31878952245 |
10 | 444016525656 |
11 | 6184352406957 |
12 | 86136917171760 |
13 | 1199732487997701 |
14 | 16710117914796072 |
15 | 232741918319147325 |
16 | 3241676738553266496 |
17 | 45150732421426583637 |
18 | 628868577161418904440 |
19 | 8759009347838438078541 |
[0,21,312,4365,60816,847077,11798280,164328861, 2288805792,31878952245,444016525656,6184352406957, 86136917171760,1199732487997701,16710117914796072, 232741918319147325,3241676738553266496, 45150732421426583637,628868577161418904440, 8759009347838438078541] |