n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 26 |
4 | 108 |
5 | 382 |
6 | 1586 |
7 | 5812 |
8 | 24044 |
9 | 89846 |
10 | 370398 |
11 | 1401292 |
12 | 5759826 |
13 | 21977516 |
14 | 90111820 |
15 | 345994216 |
16 | 1415691244 |
17 | 5461770406 |
18 | 22308412934 |
19 | 86392108636 |
20 | 352334866238 |
21 | 1368640564996 |
22 | 5574504569620 |
23 | 21708901408216 |
24 | 88320660937298 |
25 | 344680279929532 |
26 | 1400902293406676 |
[1,2,8,26,108,382,1586,5812,24044,89846,370398, 1401292,5759826,21977516,90111820,345994216, 1415691244,5461770406,22308412934,86392108636, 352334866238,1368640564996,5574504569620, 21708901408216,88320660937298,344680279929532, 1400902293406676] |