n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 19 |
4 | 63 |
5 | 195 |
6 | 613 |
7 | 1875 |
8 | 5751 |
9 | 17499 |
10 | 53169 |
11 | 161043 |
12 | 487221 |
13 | 1471683 |
14 | 4441485 |
15 | 13392331 |
16 | 40356711 |
17 | 121543683 |
18 | 365898261 |
19 | 1101089811 |
20 | 3312448137 |
21 | 9962241251 |
22 | 29954655861 |
23 | 90049997139 |
24 | 270661661541 |
25 | 813397065075 |
26 | 2444101819329 |
27 | 7343167949235 |
[1,3,6,19,63,195,613,1875,5751,17499,53169,161043, 487221,1471683,4441485,13392331,40356711, 121543683,365898261,1101089811,3312448137, 9962241251,29954655861,90049997139,270661661541, 813397065075,2444101819329,7343167949235] |