n | a(n) |
---|---|
0 | 2 |
1 | 7 |
2 | 22 |
3 | 68 |
4 | 208 |
5 | 632 |
6 | 1912 |
7 | 5768 |
8 | 17368 |
9 | 52232 |
10 | 156952 |
11 | 471368 |
12 | 1415128 |
13 | 4247432 |
14 | 12746392 |
15 | 38247368 |
16 | 114758488 |
17 | 344308232 |
18 | 1032990232 |
19 | 3099101768 |
20 | 9297567448 |
21 | 27893226632 |
22 | 83680728472 |
23 | 251044282568 |
24 | 753137042008 |
25 | 2259419514632 |
26 | 6778275321112 |
[2,7,22,68,208,632,1912,5768,17368,52232,156952, 471368,1415128,4247432,12746392,38247368, 114758488,344308232,1032990232,3099101768, 9297567448,27893226632,83680728472,251044282568, 753137042008,2259419514632,6778275321112] |