n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 5 |
4 | 64 |
5 | 400 |
6 | 1914 |
7 | 7589 |
8 | 24902 |
9 | 73134 |
10 | 188315 |
11 | 455127 |
12 | 996083 |
13 | 2098908 |
14 | 4080930 |
15 | 7790731 |
16 | 13869018 |
17 | 24527424 |
18 | 40768032 |
19 | 67955336 |
20 | 106952861 |
21 | 169909977 |
22 | 255608028 |
23 | 390623704 |
24 | 566247614 |
25 | 837326375 |
26 | 1175991196 |
27 | 1690928973 |
[0,1,5,64,400,1914,7589,24902,73134,188315,455127, 996083,2098908,4080930,7790731,13869018,24527424, 40768032,67955336,106952861,169909977,255608028, 390623704,566247614,837326375,1175991196, 1690928973] |