n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 7 |
4 | 35 |
5 | 104 |
6 | 252 |
7 | 509 |
8 | 997 |
9 | 1688 |
10 | 2751 |
11 | 4175 |
12 | 6240 |
13 | 8872 |
14 | 12324 |
15 | 16639 |
16 | 22196 |
17 | 28668 |
18 | 36931 |
19 | 46332 |
20 | 58184 |
21 | 71524 |
22 | 87183 |
23 | 105334 |
24 | 126524 |
25 | 150233 |
26 | 177448 |
27 | 207751 |
28 | 242948 |
29 | 281139 |
30 | 324739 |
[1,0,0,7,35,104,252,509,997,1688,2751,4175,6240, 8872,12324,16639,22196,28668,36931,46332,58184, 71524,87183,105334,126524,150233,177448,207751, 242948,281139,324739] |