n | a(n) |
---|---|
3 | 0 |
4 | 1 |
5 | 4 |
6 | 1 |
7 | 10 |
8 | 28 |
9 | 48 |
10 | 72 |
11 | 234 |
12 | 590 |
13 | 1194 |
14 | 3128 |
15 | 8624 |
16 | 20646 |
17 | 53656 |
18 | 142760 |
19 | 368944 |
20 | 960041 |
21 | 2535290 |
22 | 6664310 |
23 | 17553688 |
24 | 46472243 |
25 | 123351404 |
26 | 327633746 |
27 | 872745824 |
28 | 2330569953 |
29 | 6234547154 |
30 | 16709193186 |
31 | 44876578602 |
[0,1,4,1,10,28,48,72,234,590,1194,3128,8624,20646, 53656,142760,368944,960041,2535290,6664310, 17553688,46472243,123351404,327633746,872745824, 2330569953,6234547154,16709193186,44876578602] |