n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 22 |
5 | 63 |
6 | 209 |
7 | 686 |
8 | 2228 |
9 | 7365 |
10 | 24619 |
11 | 82433 |
12 | 276500 |
13 | 929936 |
14 | 3133114 |
15 | 10566260 |
16 | 35661359 |
17 | 120433051 |
18 | 406897030 |
19 | 1375168827 |
20 | 4648638160 |
21 | 15716950105 |
22 | 53145110566 |
23 | 179719928744 |
24 | 607794550141 |
25 | 2055594816788 |
26 | 6952369432018 |
[1,3,9,22,63,209,686,2228,7365,24619,82433,276500, 929936,3133114,10566260,35661359,120433051, 406897030,1375168827,4648638160,15716950105, 53145110566,179719928744,607794550141, 2055594816788,6952369432018] |