n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 61 |
3 | 179 |
4 | 527 |
5 | 1555 |
6 | 4595 |
7 | 13593 |
8 | 40245 |
9 | 119235 |
10 | 353459 |
11 | 1048285 |
12 | 3110249 |
13 | 9231305 |
14 | 27407185 |
15 | 81392387 |
16 | 241773327 |
17 | 718335747 |
18 | 2134675683 |
19 | 6344739309 |
20 | 18861068265 |
21 | 56076828573 |
22 | 166747755621 |
23 | 495896780609 |
24 | 1474935978225 |
[1,21,61,179,527,1555,4595,13593,40245,119235, 353459,1048285,3110249,9231305,27407185,81392387, 241773327,718335747,2134675683,6344739309, 18861068265,56076828573,166747755621,495896780609, 1474935978225] |