n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 2 |
4 | 2 |
5 | 13 |
6 | 21 |
7 | 67 |
8 | 231 |
9 | 509 |
10 | 1947 |
11 | 5522 |
12 | 16637 |
13 | 58030 |
14 | 170547 |
15 | 579290 |
16 | 1896475 |
17 | 6081303 |
18 | 20884509 |
19 | 68398930 |
20 | 231286693 |
21 | 788124656 |
22 | 2649341358 |
23 | 9130259705 |
24 | 31203913903 |
25 | 107304612514 |
26 | 372144639423 |
27 | 1285741209096 |
28 | 4480102404983 |
29 | 15625089552273 |
30 | 54591352088818 |
31 | 191664831925204 |
32 | 673088362068478 |
[1,0,1,2,2,13,21,67,231,509,1947,5522,16637,58030, 170547,579290,1896475,6081303,20884509,68398930, 231286693,788124656,2649341358,9130259705, 31203913903,107304612514,372144639423, 1285741209096,4480102404983,15625089552273, 54591352088818,191664831925204,673088362068478] |