n | a(n) |
---|---|
3 | 0 |
4 | 1 |
5 | 3 |
6 | 4 |
7 | 11 |
8 | 30 |
9 | 51 |
10 | 113 |
11 | 305 |
12 | 639 |
13 | 1418 |
14 | 3463 |
15 | 8352 |
16 | 20344 |
17 | 50282 |
18 | 127499 |
19 | 328081 |
20 | 844151 |
21 | 2196789 |
22 | 5779470 |
23 | 15214133 |
24 | 40183798 |
25 | 106645372 |
26 | 283296505 |
27 | 753426544 |
28 | 2008037446 |
29 | 5357984493 |
30 | 14309900503 |
31 | 38268992446 |
[0,1,3,4,11,30,51,113,305,639,1418,3463,8352, 20344,50282,127499,328081,844151,2196789,5779470, 15214133,40183798,106645372,283296505,753426544, 2008037446,5357984493,14309900503,38268992446] |