n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 5 |
7 | 16 |
8 | 50 |
9 | 137 |
10 | 377 |
11 | 995 |
12 | 2617 |
13 | 6785 |
14 | 17630 |
15 | 45646 |
16 | 118595 |
17 | 308645 |
18 | 806617 |
19 | 2115455 |
20 | 5572438 |
21 | 14737430 |
22 | 39139779 |
23 | 104354064 |
24 | 279293860 |
25 | 750182992 |
26 | 2021884234 |
27 | 5466813137 |
28 | 14826008106 |
29 | 40322237818 |
30 | 109957234707 |
[1,0,0,0,0,1,5,16,50,137,377,995,2617,6785,17630, 45646,118595,308645,806617,2115455,5572438, 14737430,39139779,104354064,279293860,750182992, 2021884234,5466813137,14826008106,40322237818, 109957234707] |