n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | 69 |
6 | 554 |
7 | 3100 |
8 | 13288 |
9 | 47492 |
10 | 147050 |
11 | 407568 |
12 | 1030912 |
13 | 2419025 |
14 | 5324684 |
15 | 11099416 |
16 | 22065120 |
17 | 42085344 |
18 | 77378556 |
19 | 137705904 |
20 | 237996060 |
21 | 400624581 |
22 | 658434694 |
23 | 1058839380 |
24 | 1669118984 |
25 | 2583424948 |
26 | 3931632406 |
27 | 5890783808 |
28 | 8699293304 |
29 | 12674960961 |
[0,0,0,4,69,554,3100,13288,47492,147050,407568, 1030912,2419025,5324684,11099416,22065120, 42085344,77378556,137705904,237996060,400624581, 658434694,1058839380,1669118984,2583424948, 3931632406,5890783808,8699293304,12674960961] |