n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 2 |
4 | 14 |
5 | 18 |
6 | 94 |
7 | 146 |
8 | 638 |
9 | 1138 |
10 | 4382 |
11 | 8658 |
12 | 30398 |
13 | 64818 |
14 | 212574 |
15 | 479890 |
16 | 1496062 |
17 | 3525106 |
18 | 10581918 |
19 | 25748306 |
20 | 75139390 |
21 | 187301554 |
22 | 535144670 |
23 | 1358396434 |
24 | 3820058238 |
25 | 9829858162 |
26 | 27316621854 |
27 | 71015537874 |
28 | 195595836350 |
29 | 512422576178 |
30 | 1401935442782 |
[0,2,2,14,18,94,146,638,1138,4382,8658,30398, 64818,212574,479890,1496062,3525106,10581918, 25748306,75139390,187301554,535144670,1358396434, 3820058238,9829858162,27316621854,71015537874, 195595836350,512422576178,1401935442782] |