n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 9 |
3 | 36 |
4 | 135 |
5 | 513 |
6 | 1944 |
7 | 7371 |
8 | 27945 |
9 | 105948 |
10 | 401679 |
11 | 1522881 |
12 | 5773680 |
13 | 21889683 |
14 | 82990089 |
15 | 314639316 |
16 | 1192888215 |
17 | 4522582593 |
18 | 17146412424 |
19 | 65006985051 |
20 | 246460192425 |
21 | 934401532428 |
22 | 3542585174559 |
23 | 13430960120961 |
[0,3,9,36,135,513,1944,7371,27945,105948,401679, 1522881,5773680,21889683,82990089,314639316, 1192888215,4522582593,17146412424,65006985051, 246460192425,934401532428,3542585174559, 13430960120961] |