n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 6 |
4 | 12 |
5 | 18 |
6 | 52 |
7 | 92 |
8 | 278 |
9 | 606 |
10 | 1736 |
11 | 4378 |
12 | 11974 |
13 | 31826 |
14 | 86592 |
15 | 234514 |
16 | 645864 |
17 | 1763784 |
18 | 4904844 |
19 | 13503716 |
20 | 37762996 |
21 | 104922104 |
22 | 294474340 |
23 | 824706556 |
24 | 2322523264 |
25 | 6544002006 |
26 | 18497507308 |
27 | 52357115006 |
28 | 148540658418 |
29 | 421986604840 |
30 | 1201221586484 |
[1,2,4,6,12,18,52,92,278,606,1736,4378,11974, 31826,86592,234514,645864,1763784,4904844, 13503716,37762996,104922104,294474340,824706556, 2322523264,6544002006,18497507308,52357115006, 148540658418,421986604840,1201221586484] |