n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 3 |
7 | 7 |
8 | 14 |
9 | 33 |
10 | 74 |
11 | 180 |
12 | 438 |
13 | 1090 |
14 | 2741 |
15 | 6994 |
16 | 17966 |
17 | 46565 |
18 | 121440 |
19 | 318597 |
20 | 839953 |
21 | 2224486 |
22 | 5914248 |
23 | 15780662 |
24 | 42241422 |
25 | 113402369 |
26 | 305254039 |
27 | 823690961 |
28 | 2227640597 |
29 | 6037142355 |
30 | 16392945284 |
31 | 44592703836 |
[0,0,0,1,1,2,3,7,14,33,74,180,438,1090,2741,6994, 17966,46565,121440,318597,839953,2224486,5914248, 15780662,42241422,113402369,305254039,823690961, 2227640597,6037142355,16392945284,44592703836] |