n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 5 |
5 | 20 |
6 | 36 |
7 | 61 |
8 | 244 |
9 | 504 |
10 | 576 |
11 | 1385 |
12 | 5540 |
13 | 11916 |
14 | 17280 |
15 | 14400 |
16 | 50521 |
17 | 202084 |
18 | 442224 |
19 | 697536 |
20 | 792000 |
21 | 518400 |
22 | 2702765 |
23 | 10811060 |
24 | 23870196 |
25 | 39202560 |
26 | 50198400 |
27 | 47174400 |
28 | 25401600 |
29 | 199360981 |
30 | 797443924 |
31 | 1769923944 |
[1,1,4,5,20,36,61,244,504,576,1385,5540,11916, 17280,14400,50521,202084,442224,697536,792000, 518400,2702765,10811060,23870196,39202560, 50198400,47174400,25401600,199360981,797443924, 1769923944] |