n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 9 |
4 | 48 |
5 | 150 |
6 | 90 |
7 | 490 |
8 | 2240 |
9 | 11340 |
10 | 2520 |
11 | 152460 |
12 | 83160 |
13 | 2342340 |
14 | 2522520 |
15 | 540540 |
16 | 11531520 |
17 | 104144040 |
18 | 110270160 |
19 | 737176440 |
20 | 775975200 |
21 | 162954792 |
22 | 56904848 |
23 | 1368302936 |
24 | 2141691552 |
25 | 111546435000 |
26 | 116008292400 |
27 | 1084231348200 |
[1,4,9,48,150,90,490,2240,11340,2520,152460,83160, 2342340,2522520,540540,11531520,104144040, 110270160,737176440,775975200,162954792,56904848, 1368302936,2141691552,111546435000,116008292400, 1084231348200] |