n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 30 |
3 | 300 |
4 | 1600 |
5 | 5925 |
6 | 17346 |
7 | 43120 |
8 | 95040 |
9 | 191025 |
10 | 356950 |
11 | 628716 |
12 | 1054560 |
13 | 1697605 |
14 | 2638650 |
15 | 3979200 |
16 | 5844736 |
17 | 8388225 |
18 | 11793870 |
19 | 16281100 |
20 | 22108800 |
21 | 29579781 |
22 | 39045490 |
23 | 50910960 |
24 | 65640000 |
25 | 83760625 |
26 | 105870726 |
27 | 132643980 |
28 | 164836000 |
29 | 203290725 |
30 | 248947050 |
[0,1,30,300,1600,5925,17346,43120,95040,191025, 356950,628716,1054560,1697605,2638650,3979200, 5844736,8388225,11793870,16281100,22108800, 29579781,39045490,50910960,65640000,83760625, 105870726,132643980,164836000,203290725,248947050] |