n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 576 |
5 | 21076 |
6 | 296296 |
7 | 2475473 |
8 | 14739153 |
9 | 68943381 |
10 | 268880381 |
11 | 909450751 |
12 | 2742417535 |
13 | 7522650135 |
14 | 19058554515 |
15 | 45123156390 |
16 | 100771975590 |
17 | 213877057086 |
18 | 434042943246 |
19 | 846542846578 |
20 | 1593528150578 |
[0,0,0,0,576,21076,296296,2475473,14739153, 68943381,268880381,909450751,2742417535, 7522650135,19058554515,45123156390,100771975590, 213877057086,434042943246,846542846578, 1593528150578] |