n | a(n) |
---|---|
8 | 1 |
9 | 72 |
10 | 3160 |
11 | 109736 |
12 | 3321960 |
13 | 91962520 |
14 | 2392407864 |
15 | 59487568920 |
16 | 1429702652400 |
17 | 33469894423680 |
18 | 767464189477128 |
19 | 17307292232623120 |
20 | 385037822966765800 |
21 | 8470484585302467168 |
22 | 184606563010558803400 |
23 | 3991697442876739754640 |
24 | 85733828145510955528212 |
[1,72,3160,109736,3321960,91962520,2392407864, 59487568920,1429702652400,33469894423680, 767464189477128,17307292232623120, 385037822966765800,8470484585302467168, 184606563010558803400,3991697442876739754640, 85733828145510955528212] |