n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 4 |
5 | 10 |
6 | 22 |
7 | 49 |
8 | 112 |
9 | 256 |
10 | 580 |
11 | 1309 |
12 | 2956 |
13 | 6682 |
14 | 15106 |
15 | 34141 |
16 | 77152 |
17 | 174352 |
18 | 394024 |
19 | 890473 |
20 | 2012404 |
21 | 4547866 |
22 | 10277806 |
23 | 23227033 |
24 | 52491280 |
25 | 118626160 |
26 | 268085740 |
27 | 605852581 |
28 | 1369179004 |
29 | 3094236490 |
30 | 6992730202 |
31 | 15803018149 |
[0,0,0,1,4,10,22,49,112,256,580,1309,2956,6682, 15106,34141,77152,174352,394024,890473,2012404, 4547866,10277806,23227033,52491280,118626160, 268085740,605852581,1369179004,3094236490, 6992730202,15803018149] |