n | a(n) |
---|---|
1 | 3 |
2 | 6 |
3 | 9 |
4 | 26 |
5 | 61 |
6 | 154 |
7 | 374 |
8 | 941 |
9 | 2357 |
10 | 5963 |
11 | 15074 |
12 | 38168 |
13 | 96641 |
14 | 244836 |
15 | 620311 |
16 | 1571854 |
17 | 3983147 |
18 | 10093850 |
19 | 25579490 |
20 | 64823479 |
21 | 164276135 |
22 | 416311227 |
23 | 1055023990 |
24 | 2673664936 |
25 | 6775663297 |
26 | 17171047596 |
27 | 43515284891 |
28 | 110277499816 |
[3,6,9,26,61,154,374,941,2357,5963,15074,38168, 96641,244836,620311,1571854,3983147,10093850, 25579490,64823479,164276135,416311227,1055023990, 2673664936,6775663297,17171047596,43515284891, 110277499816] |