n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 6 |
6 | 12 |
7 | 27 |
8 | 63 |
9 | 154 |
10 | 386 |
11 | 989 |
12 | 2574 |
13 | 6787 |
14 | 18085 |
15 | 48622 |
16 | 131719 |
17 | 359194 |
18 | 985186 |
19 | 2715973 |
20 | 7521568 |
21 | 20915257 |
22 | 58373587 |
23 | 163462816 |
24 | 459136810 |
25 | 1293223231 |
26 | 3651864607 |
27 | 10336625732 |
28 | 29321683083 |
29 | 83344398534 |
30 | 237344961292 |
[1,1,2,3,6,12,27,63,154,386,989,2574,6787,18085, 48622,131719,359194,985186,2715973,7521568, 20915257,58373587,163462816,459136810,1293223231, 3651864607,10336625732,29321683083,83344398534, 237344961292] |