n | a(n) |
---|---|
0 | 4 |
1 | 10 |
2 | 25 |
3 | 62 |
4 | 154 |
5 | 383 |
6 | 953 |
7 | 2371 |
8 | 5899 |
9 | 14677 |
10 | 36517 |
11 | 90856 |
12 | 226054 |
13 | 562433 |
14 | 1399360 |
15 | 3481674 |
16 | 8662570 |
17 | 21552885 |
18 | 53624600 |
19 | 133420548 |
20 | 331956651 |
21 | 825923891 |
22 | 2054937811 |
23 | 5112782731 |
24 | 12720845913 |
25 | 31650067929 |
26 | 78746870040 |
27 | 195925947300 |
28 | 487473048845 |
[4,10,25,62,154,383,953,2371,5899,14677,36517, 90856,226054,562433,1399360,3481674,8662570, 21552885,53624600,133420548,331956651,825923891, 2054937811,5112782731,12720845913,31650067929, 78746870040,195925947300,487473048845] |