n | a(n) |
---|---|
0 | 4 |
1 | 4 |
2 | 9 |
3 | 26 |
4 | 82 |
5 | 247 |
6 | 731 |
7 | 2186 |
8 | 6559 |
9 | 19679 |
10 | 59047 |
11 | 177149 |
12 | 531439 |
13 | 1594322 |
14 | 4782979 |
15 | 14348905 |
16 | 43046722 |
17 | 129140159 |
18 | 387420493 |
19 | 1162261465 |
20 | 3486784399 |
21 | 10460353201 |
22 | 31381059597 |
23 | 94143178823 |
24 | 282429536489 |
25 | 847288609441 |
[4,4,9,26,82,247,731,2186,6559,19679,59047,177149, 531439,1594322,4782979,14348905,43046722, 129140159,387420493,1162261465,3486784399, 10460353201,31381059597,94143178823,282429536489, 847288609441] |