n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 4 |
5 | 14 |
6 | 28 |
7 | 74 |
8 | 148 |
9 | 350 |
10 | 700 |
11 | 1562 |
12 | 3124 |
13 | 6734 |
14 | 13468 |
15 | 28394 |
16 | 56788 |
17 | 117950 |
18 | 235900 |
19 | 484922 |
20 | 969844 |
21 | 1979054 |
22 | 3958108 |
23 | 8034314 |
24 | 16068628 |
25 | 32491550 |
26 | 64983100 |
27 | 131029082 |
28 | 262058164 |
29 | 527304974 |
30 | 1054609948 |
31 | 2118785834 |
32 | 4237571668 |
33 | 8503841150 |
34 | 17007682300 |
[0,0,0,2,4,14,28,74,148,350,700,1562,3124,6734, 13468,28394,56788,117950,235900,484922,969844, 1979054,3958108,8034314,16068628,32491550, 64983100,131029082,262058164,527304974,1054609948, 2118785834,4237571668,8503841150,17007682300] |