n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 16 |
3 | 60 |
4 | 170 |
5 | 396 |
6 | 848 |
7 | 1716 |
8 | 3235 |
9 | 5720 |
10 | 9696 |
11 | 15912 |
12 | 25236 |
13 | 38760 |
14 | 58080 |
15 | 85272 |
16 | 122661 |
17 | 173052 |
18 | 240240 |
19 | 328900 |
20 | 444158 |
21 | 592020 |
22 | 780208 |
23 | 1017900 |
24 | 1315015 |
25 | 1682928 |
26 | 2135744 |
27 | 2689808 |
28 | 3362600 |
29 | 4173840 |
30 | 5147328 |
31 | 6310128 |
32 | 7690953 |
33 | 9321780 |
34 | 11240400 |
[1,4,16,60,170,396,848,1716,3235,5720,9696,15912, 25236,38760,58080,85272,122661,173052,240240, 328900,444158,592020,780208,1017900,1315015, 1682928,2135744,2689808,3362600,4173840,5147328, 6310128,7690953,9321780,11240400] |