n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 3 |
6 | 6 |
7 | 7 |
8 | 28 |
9 | 49 |
10 | 100 |
11 | 247 |
12 | 692 |
13 | 1445 |
14 | 3457 |
15 | 9167 |
16 | 22971 |
17 | 56256 |
18 | 147690 |
19 | 383299 |
20 | 991560 |
21 | 2594234 |
22 | 6854341 |
23 | 18068210 |
24 | 47805058 |
25 | 127015595 |
26 | 338210910 |
27 | 901285787 |
28 | 2408577984 |
29 | 6449780524 |
30 | 17297087625 |
31 | 46467257473 |
[0,0,3,6,7,28,49,100,247,692,1445,3457,9167,22971, 56256,147690,383299,991560,2594234,6854341, 18068210,47805058,127015595,338210910,901285787, 2408577984,6449780524,17297087625,46467257473] |