n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 2 |
4 | 4 |
5 | 12 |
6 | 26 |
7 | 52 |
8 | 98 |
9 | 178 |
10 | 316 |
11 | 556 |
12 | 972 |
13 | 1694 |
14 | 2950 |
15 | 5140 |
16 | 8968 |
17 | 15676 |
18 | 27460 |
19 | 48212 |
20 | 84844 |
21 | 149656 |
22 | 264578 |
23 | 468780 |
24 | 832344 |
25 | 1480860 |
26 | 2639730 |
27 | 4714066 |
28 | 8432938 |
29 | 15110070 |
30 | 27115448 |
31 | 48729252 |
32 | 87689374 |
33 | 157998112 |
34 | 285016412 |
35 | 514716578 |
36 | 930499110 |
37 | 1683776276 |
[0,0,2,4,12,26,52,98,178,316,556,972,1694,2950, 5140,8968,15676,27460,48212,84844,149656,264578, 468780,832344,1480860,2639730,4714066,8432938, 15110070,27115448,48729252,87689374,157998112, 285016412,514716578,930499110,1683776276] |