n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 10 |
3 | 34 |
4 | 98 |
5 | 258 |
6 | 642 |
7 | 1538 |
8 | 3586 |
9 | 8194 |
10 | 18434 |
11 | 40962 |
12 | 90114 |
13 | 196610 |
14 | 425986 |
15 | 917506 |
16 | 1966082 |
17 | 4194306 |
18 | 8912898 |
19 | 18874370 |
20 | 39845890 |
21 | 83886082 |
22 | 176160770 |
23 | 369098754 |
24 | 771751938 |
25 | 1610612738 |
26 | 3355443202 |
27 | 6979321858 |
28 | 14495514626 |
29 | 30064771074 |
30 | 62277025794 |
[0,2,10,34,98,258,642,1538,3586,8194,18434,40962, 90114,196610,425986,917506,1966082,4194306, 8912898,18874370,39845890,83886082,176160770, 369098754,771751938,1610612738,3355443202, 6979321858,14495514626,30064771074,62277025794] |