n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 5 |
7 | 13 |
8 | 26 |
9 | 65 |
10 | 147 |
11 | 369 |
12 | 899 |
13 | 2298 |
14 | 5851 |
15 | 15261 |
16 | 39945 |
17 | 105948 |
18 | 282504 |
19 | 759480 |
20 | 2052027 |
21 | 5576017 |
22 | 15216998 |
23 | 41705762 |
24 | 114715503 |
25 | 316611401 |
26 | 876466003 |
27 | 2433091773 |
28 | 6771462322 |
29 | 18889829555 |
30 | 52809592990 |
31 | 147935027381 |
32 | 415182991401 |
33 | 1167251435240 |
[0,0,0,1,1,3,5,13,26,65,147,369,899,2298,5851, 15261,39945,105948,282504,759480,2052027,5576017, 15216998,41705762,114715503,316611401,876466003, 2433091773,6771462322,18889829555,52809592990, 147935027381,415182991401,1167251435240] |