n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 24 |
6 | 62 |
7 | 156 |
8 | 387 |
9 | 951 |
10 | 2323 |
11 | 5652 |
12 | 13716 |
13 | 33228 |
14 | 80405 |
15 | 194415 |
16 | 469845 |
17 | 1135092 |
18 | 2741626 |
19 | 6620928 |
20 | 15987663 |
21 | 38603019 |
22 | 93204647 |
23 | 225030024 |
24 | 543293352 |
25 | 1311663096 |
26 | 3166694569 |
27 | 7645173627 |
28 | 18457238241 |
29 | 44559967920 |
30 | 107577688310 |
31 | 259716176580 |
[0,0,1,3,9,24,62,156,387,951,2323,5652,13716, 33228,80405,194415,469845,1135092,2741626,6620928, 15987663,38603019,93204647,225030024,543293352, 1311663096,3166694569,7645173627,18457238241, 44559967920,107577688310,259716176580] |